全文获取类型
收费全文 | 3605341篇 |
免费 | 271446篇 |
国内免费 | 6968篇 |
专业分类
耳鼻咽喉 | 51251篇 |
儿科学 | 115188篇 |
妇产科学 | 96852篇 |
基础医学 | 508633篇 |
口腔科学 | 105933篇 |
临床医学 | 328242篇 |
内科学 | 695852篇 |
皮肤病学 | 77509篇 |
神经病学 | 294957篇 |
特种医学 | 140072篇 |
外国民族医学 | 1084篇 |
外科学 | 543233篇 |
综合类 | 84398篇 |
现状与发展 | 5篇 |
一般理论 | 1426篇 |
预防医学 | 283485篇 |
眼科学 | 86219篇 |
药学 | 268349篇 |
11篇 | |
中国医学 | 7622篇 |
肿瘤学 | 193434篇 |
出版年
2018年 | 39485篇 |
2017年 | 30327篇 |
2016年 | 33802篇 |
2015年 | 37707篇 |
2014年 | 52949篇 |
2013年 | 80399篇 |
2012年 | 109169篇 |
2011年 | 115699篇 |
2010年 | 68295篇 |
2009年 | 63751篇 |
2008年 | 109081篇 |
2007年 | 116154篇 |
2006年 | 116897篇 |
2005年 | 113469篇 |
2004年 | 109201篇 |
2003年 | 105049篇 |
2002年 | 102658篇 |
2001年 | 169002篇 |
2000年 | 174845篇 |
1999年 | 146512篇 |
1998年 | 41943篇 |
1997年 | 37319篇 |
1996年 | 36845篇 |
1995年 | 35620篇 |
1994年 | 33260篇 |
1993年 | 30833篇 |
1992年 | 115242篇 |
1991年 | 111522篇 |
1990年 | 107594篇 |
1989年 | 103969篇 |
1988年 | 95986篇 |
1987年 | 94325篇 |
1986年 | 89129篇 |
1985年 | 85194篇 |
1984年 | 64257篇 |
1983年 | 54733篇 |
1982年 | 32626篇 |
1981年 | 29140篇 |
1979年 | 59111篇 |
1978年 | 41362篇 |
1977年 | 35234篇 |
1976年 | 32919篇 |
1975年 | 34757篇 |
1974年 | 42695篇 |
1973年 | 40706篇 |
1972年 | 38088篇 |
1971年 | 35196篇 |
1970年 | 33058篇 |
1969年 | 30761篇 |
1968年 | 28257篇 |
排序方式: 共有10000条查询结果,搜索用时 21 毫秒
81.
Francesco S. Violante 《La Medicina del lavoro》2020,111(4):249
Background:Criteria for diagnosis and compensation of occupational musculoskeletal diseases varies widely between countries as demonstrated by the large differences between countries with comparable economics and social systems (for example, within the European Union). Several countries have a list of occupational diseases and sometimes these lists include diagnostic and attribution criteria, but these criteria are usually not very specific, and they may also be very different.Objectives:The aim of this paper is to explicitly define what are the information needed for an evidence-based diagnosis and attribution of an occupational musculoskeletal disease.Methods:Based on the general framework of evidence-based medicine, a review is presented of the information required to define: - when a musculoskeletal disease is present, according to the best available techniques; - how to define a relevant exposure to biomechanical risk factors, according to the best available techniques.Results:Criteria are presented to combine information regarding the diagnosis of a musculoskeletal disease and exposure to biomechanical risk factors for an evidence-based attribution of the disease to the occupational exposure. The criteria use a probabilistic model that combine epidemiologic and medical findings, workplace exposure assessment, and non-occupational factors evaluation.Discussion:The use of the proposed criteria may improve the process of diagnosis and attribution of an occupational musculoskeletal disease. In addition, it makes possible to associate a probability rank to the attribution and, ultimately, it may improve the overall quality of the decisional process of the occupational physician.Key words: Criteria, occupational disease, musculoskeletal system 相似文献
82.
Manisha Udhnani Megan Perez Liv S. Clasen Elizabeth Adeyemi 《Developmental neuropsychology》2020,45(2):79-93
ABSTRACTLanguage and executive functioning are major impairments in many neurodevelopmental disorders, but little is known about the relations between these constructs, particularly using parent-report. Thus, the current research sought to examine relations between executive function and language in two groups – Down syndrome (DS; n=41; Mage = 11.2) and autism spectrum disorder (ASD; n=91; Mage = 7.7). Results were as follows: in DS, executive function predicted pragmatic, but not structural language after covarying for age, sex, and social functioning; in ASD, executive function predicted both. Findings highlight the interrelatedness of language and executive functioning and may have implications for intervention development. 相似文献
83.
Büşra Başar Gökcen Yasemin Akdevelioğlu Sultan Canan Nuray Bozkurt 《Gynecological endocrinology》2020,36(9):764-767
AbstractData on eating disorders in women with PCOS is insufficient. The objective of this case study was to examine the hypothesis that women with PCOS exhibit more impaired eating than healthy women. Women diagnosed with PCOS under the 2003 Rotterdam Diagnostic Criteria (n?=?40) were compared with a healthy control group (n?=?40). The groups also were divided into two as normal body weight and overweight/obese. The Eating Disorders Assessment Questionnaire (EDE-Q) and the Three Factor Eating Questionnaire (TFEQ-R21), were completed by all participants in order to evaluate eating behaviors in addition to eating disorders. Among the overweight/obese group, the average total and subscale scores of the EDE-Q as well as the total and sub-factor scores of the TFEQ-R21 were higher in women with PCOS compared to controls (p?<?.05). However, this statistically significant result was not shown among the women with normal weight (p?>?.05). In comparison to the controls, the PCOS women displayed higher values of the tool scores indicating abnormal restraint eating, body shape concern and weight concern subscale scores (p?<?.05). This result suggests that the evaluation of eating disorders should be added to routine screening and the monitoring of women with PCOS. 相似文献
84.
Karen Galta Sørensen Knut Øymar Ingvild Dalen Thomas Halvorsen Ingvild Bruun Mikalsen 《Pediatric allergy and immunology》2020,31(1):57-65
Background
Various trajectories for lung function and bronchial hyper-reactivity (BHR) from early childhood to adulthood are described, including puberty as a period with excessive lung growth. Bronchiolitis in infancy may be associated with increased risk of developing chronic obstructive pulmonary disease, but the development of respiratory patterns during puberty is poorly characterized for these children. We aimed to study the development and trajectories of lung function and BHR from 11 to 18 years of age in children hospitalized for bronchiolitis in infancy.Methods
Infants hospitalized for bronchiolitis at the University Hospitals in Stavanger and Bergen, Norway, during 1997-1998, and an age-matched control group, were included in a longitudinal follow-up study and examined at 11 and 18 years of age with spirometry and methacholine provocation test (MPT). The MPT data were managed as dose-response slope (DRS) in the statistical analyses. Changes in lung function and DRS from 11 to 18 years of age were analyzed by generalized estimating equations, including interaction terms.Results
z-scores for forced vital capacity (FVC), forced expiratory volume in first second (FEV1), FEV1/FVC ratio, and DRS were not different from 11 to 18 years of age in both the post-bronchiolitis and the control group. The trajectories from 11 to 18 years did not differ between the two groups. BHR at age 11 was independently associated with asthma at age 18.Conclusion
Children hospitalized for bronchiolitis had stable predicted lung function and BHR from 11 to 18 years of age. The lung function trajectories were not different from controls.85.
Grete Moth Morten B. Christensen Helle Collatz Christensen Anders H. Carlsen Ingunn S. Riddervold Linda Huibers 《Scandinavian journal of primary health care》2020,38(3):272-280
Abstract
Objective
Demands for out-of-hours primary care (OOH-PC) services are increasing. Many citizens call because of non-urgent health problems. Nevertheless, the patients’ motives for requesting medical help outside office hours remains an understudied area. This study aimed to examine motives for calling OOH-PC services in various age groups. 相似文献86.
Testing association of rare genetic variants with resistance to three common antiseizure medications
Stefan Wolking Claudia Moreau Anne T. Nies Elke Schaeffeler Mark McCormack Pauls Auce Andreja Avbersek Felicitas Becker Martin Krenn Rikke S. Møller Marina Nikanorova Yvonne G. Weber Sarah Weckhuysen Gianpiero L. Cavalleri Norman Delanty Chantal Depondt Michael R. Johnson Bobby P.C. Koeleman Wolfram S. Kunz Anthony G. Marson Josemir W. Sander Graeme J. Sills Pasquale Striano Federico Zara Fritz Zimprich Matthias Schwab Roland Krause Sanjay M. Sisodiya Patrick Cossette Simon L. Girard Holger Lerche EpiPGX Consortium 《Epilepsia》2020,61(4):657-666
87.
Kristen McAlpine Rodney H. Breau Dawn Stacey Christopher Knee Michael A.S. Jewett Philippe D. Violette Patrick O. Richard Ilias Cagiannos Christopher Morash Luke T. Lavalle 《Canadian Urological Association journal》2020,14(12):385
IntroductionShared decision-making incorporates patients’ values and preferences to achieve high-quality decisions. The objective of this study was to develop an acceptable patient decision aid to facilitate shared decision-making for the management of small renal masses (SRMs).MethodsThe International Patient Decision Aids Standards were used to guide an evidence-based development process. Management options included active surveillance, thermal ablation, partial nephrectomy, and radical nephrectomy. A literature review was performed to provide incidence rates for outcomes of each option. Once a prototype was complete, alpha-testing was performed using a 10-question survey to assess acceptability with patients, patient advocates, urologists, and methodological experts. The primary outcome was acceptability of the decision aid.ResultsA novel patient decision aid was created to facilitate shared decision-making for the management of SRMs. Acceptability testing was performed with 20 patients, 10 urologists, two patient advocates, and one methodological expert. Responders indicated the decision aid was appropriate in length (82%, 27/33), well-balanced (82%, 27/33), and had language that was easy to follow (94%, 31/33). All patient responders felt the decision aid would have been helpful during their consultation and would recommend the decision aid for future patients (100%, 20/20). Most urologists reported they intend to use the decision aid (90%, 9/10).ConclusionsA novel patient decision aid was created to facilitate shared decision-making for management of SRMs. This clinical tool was acceptable with patients, patient advocates, and urologists and is freely available at: https://decisionaid.ohri.ca/decaids.html. 相似文献
88.
Anthony P. Adamis Christopher J. Brittain Atul Dandekar J. Jill Hopkins 《Eye (London, England)》2020,34(11):1966
This article aims to identify key opportunities for improvement in the diagnosis and treatment of retinal disease, and describe recent innovations that will potentially facilitate improved outcomes with existing intravitreal vascular endothelial growth factor (VEGF) therapies and lay the groundwork for new treatment approaches. The review begins with a summary of the key discoveries that led to the development of anti-VEGF therapies and briefly reviews their impact on clinical practice. Opportunities for improvements in diagnosis, real-world outcomes with existing therapies, long-acting therapeutics and personalised health care are discussed, as well as the need to identify new targets for therapeutic intervention. Low-cost, remote patient screening and monitoring using artificial intelligence (AI)-based technologies can help improve diagnosis rates and enable remote disease monitoring with minimal patient burden. AI-based tools can be applied to generate patient-level prognostic data and predict individual treatment needs, reducing the time needed to optimise a patient’s treatment regimen. Long-acting therapeutics can help improve visual outcomes by reducing the treatment burden. When paired with AI-generated prognoses, long-acting therapeutics enable the possibility of vision loss prevention. Dual-acting drugs may help improve efficacy and/or durability beyond what is possible with anti-VEGF agents alone. Recent developments and ongoing innovations will help build upon the success of anti-VEGF therapies to further reduce vision loss owing to retinal disease while lowering the overall burden of care.Subject terms: Retinal diseases, Quality of life 相似文献
89.
Andrew J. Admon Viren Kaul Sushma K. Cribbs Elizabeth Guzman Odalys Jimenez Jeremy B. Richards 《Medical teacher》2020,42(5):500-506
AbstractLive discussions on the social media site Twitter or Twitter chats are gaining popularity as powerful tools for engaging a broad audience in an interactive discussion. Medical education, in particular, is experiencing an increase in the use of this modality to support informal learning, as a means to encourage collaboration and share best practices, and as a platform for large-scale mentorship. Despite this growth in popularity, there are limited data to guide medical educators on the fundamentals of organizing a Twitter chat. In this Twelve Tips article, we discuss strategies relevant to potential Twitter chat organizers. We have arranged the tips chronologically, beginning with a discussion of initial considerations when planning and formulating a chat topic and publicizing the chat to potentially interested people and groups, followed by practical considerations while hosting the chat, and finally strategies for evaluating and extending a Twitter chat’s impact. 相似文献
90.
Hedy S. Wald 《Medical teacher》2020,42(7):744-755
AbstractPublic health crises, including pandemics, are associated with significant health risk and concomitant stress, fear, decreased sense of control, and uncertainty. Deleterious impact on both physical and mental health can result, including for healthcare professionals and health professions trainees. Changes in governmental policies and hospital protocols for healthcare professionals as well as disruption of educational formats and requirements for trainees can ensue. Difficult anxiety-provoking realities of public health crises including pandemics which involve caring for many seriously ill patients, moral distress including difficult care decisions, personal health risk, and/or potential risk to one’s family can take a dire toll on the mental health of healthcare professionals at all stages of the professional lifecycle. Educational disruptions can create significant anxiety for trainees about completing requirements and achieving competencies. Within this, coping skills may be challenged and strengths may be elucidated as well. Such crises create an imperative for medical educators to support trainees’ wellbeing through adaptive flexibility for curriculum innovation and culturally sensitive resilience and wellbeing interventions. Strategies (‘tips’) to optimize resilience and wellbeing with an integrative resilience approach of individual, learning environment, and organization/systems factors are presented. 相似文献