全文获取类型
收费全文 | 5090篇 |
免费 | 376篇 |
国内免费 | 24篇 |
专业分类
耳鼻咽喉 | 30篇 |
儿科学 | 90篇 |
妇产科学 | 73篇 |
基础医学 | 745篇 |
口腔科学 | 185篇 |
临床医学 | 403篇 |
内科学 | 1120篇 |
皮肤病学 | 70篇 |
神经病学 | 610篇 |
特种医学 | 149篇 |
外科学 | 939篇 |
综合类 | 35篇 |
一般理论 | 3篇 |
预防医学 | 241篇 |
眼科学 | 86篇 |
药学 | 347篇 |
中国医学 | 4篇 |
肿瘤学 | 360篇 |
出版年
2023年 | 37篇 |
2022年 | 30篇 |
2021年 | 134篇 |
2020年 | 94篇 |
2019年 | 131篇 |
2018年 | 169篇 |
2017年 | 135篇 |
2016年 | 133篇 |
2015年 | 146篇 |
2014年 | 241篇 |
2013年 | 242篇 |
2012年 | 426篇 |
2011年 | 445篇 |
2010年 | 224篇 |
2009年 | 212篇 |
2008年 | 373篇 |
2007年 | 341篇 |
2006年 | 305篇 |
2005年 | 304篇 |
2004年 | 234篇 |
2003年 | 238篇 |
2002年 | 223篇 |
2001年 | 41篇 |
2000年 | 24篇 |
1999年 | 36篇 |
1998年 | 52篇 |
1997年 | 33篇 |
1996年 | 28篇 |
1995年 | 35篇 |
1994年 | 28篇 |
1993年 | 26篇 |
1992年 | 21篇 |
1991年 | 33篇 |
1990年 | 24篇 |
1989年 | 23篇 |
1988年 | 16篇 |
1987年 | 17篇 |
1986年 | 24篇 |
1985年 | 36篇 |
1984年 | 22篇 |
1983年 | 18篇 |
1982年 | 17篇 |
1981年 | 12篇 |
1980年 | 19篇 |
1979年 | 13篇 |
1978年 | 10篇 |
1975年 | 6篇 |
1974年 | 9篇 |
1973年 | 13篇 |
1967年 | 8篇 |
排序方式: 共有5490条查询结果,搜索用时 15 毫秒
1.
2.
P.V. Chernyshov A. Lallas L. Tomas‐Aragones M. Arenbergerova M. Samimi L. Manolache A. Svensson S.E. Marron F. Sampogna S. Spillekom‐vanKoulil A. Bewley A.M. Forsea G.B. Jemec J.C. Szepietowski M. Augustin A.Y. Finlay 《Journal of the European Academy of Dermatology and Venereology》2019,33(5):816-827
The European Academy of Dermatology and Venereology (EADV) Task Forces (TFs) on Quality of Life (QoL) and Patient Oriented Outcomes, Melanoma and Non‐Melanoma Skin Cancer (NMSC) present a review of the literature and position statement on health‐related (HR) QoL assessment in skin cancer patients. A literature search was carried out to identify publications since 1980 that included information about the impact of SC on QoL. Generic, dermatology‐specific, cancer‐specific, SC‐specific, facial SC‐specific, NMSC‐specific, basal cell carcinoma‐specific and melanoma‐specific QoL questionnaires have been used to assess HRQoL in SC patients. HRQoL was assessed in the context of creation and validation of the HRQoL instruments, clinical trials, comparison of QoL in SC and other cancers, other diseases or controls, HRQoL assessment after treatment, comorbidities, behaviour modification, predictors of QoL and survival, supportive care needs, coping strategies and fear of cancer recurrence. The most widely used instruments for HRQoL assessment in SC patients are the European Organisation for Research and Treatment of Cancer Core Questionnaire (EORTC QLQ‐C30), the Functional Assessment of Cancer Therapy‐Melanoma (FACT‐M), Skin Cancer Index (SCI), Short Form 36 Item Health Survey (SF‐36) and the Dermatology Life Quality Index (DLQI). The TFs recommend the use of the cancer‐specific EORTC QLQ‐C30, especially in late stages of disease, and the melanoma‐specific FACT‐M and SC‐specific SCI questionnaires. These instruments have been well validated and used in several studies. Other HRQoL instruments, also with good basic validation, are not currently recommended because the experience of their use is too limited. Dermatology‐specific HRQoL instruments can be used to assess the impact of skin‐related problems in SC. The TFs encourage further studies to validate HRQoL instruments for use in different stages of SC, in order to allow more detailed practical recommendations on HRQoL assessment in SC. 相似文献
3.
4.
Morokoff Andrew Jones Jordan Nguyen Hong Ma Chenkai Lasocki Arian Gaillard Frank Bennett Iwan Luwor Rod Stylli Stanley Paradiso Lucia Koldej Rachel Paldor Iddo Molania Ramyar Speed Terence P. Webb Andrew Infusini Guiseppe Li Jason Malpas Charles Kalincik Tomas Drummond Katharine Siegal Tali Kaye Andrew H. 《Journal of neuro-oncology》2020,148(3):401-418
Journal of Neuro-Oncology - We performed a systematic review and meta-analysis of clinical outcomes for patients with acromegaly treated with stereotactic radiosurgery (SRS). Primary outcomes were... 相似文献
5.
Shane R. Stecklein Simona F. Shaitelman Gildy V. Babiera Isabelle Bedrosian Dalliah M. Black Matthew T. Ballo Isadora Arzu Eric A. Strom Valerie K. Reed Tomas Dvorak Benjamin D. Smith Wendy A. Woodward Karen E. Hoffman Pamela J. Schlembach Steve M. Kirsner Christopher L. Nelson Jinzhong Yang William Guerra Elizabeth S. Bloom 《Practical radiation oncology》2019,9(1):e4-e13
Purpose
This study aimed to prospectively characterize toxicity and cosmesis after accelerated partial breast irradiation (APBI) with 3-dimensional conformal radiation therapy (CRT) or single-entry, multilumen, intracavitary brachytherapy.Methods and materials
A total of 281 patients with pTis, pT1N0, or pT2N0 (≤3.0 cm) breast cancer treated with segmental mastectomy were prospectively enrolled from December 2008 through August 2014. APBI was delivered using 3-dimensional CRT (n = 29) or with SAVI (n = 176), Contura (n = 56), or MammoSite (n = 20) brachytherapy catheters. Patients were evaluated at protocol-specified intervals, at which time the radiation oncologist scored cosmetic outcome, toxicities, and recurrence status using a standardized template.Results
The median follow-up time is 41 months. Grade 1 seroma and fibrosis were more common with brachytherapy than with 3-dimensional CRT (50.4% vs 3.4% for seroma; P < .0001 and 66.3% vs 44.8% for fibrosis; P = .02), but grade 1 edema was more common with 3-dimensional CRT than with brachytherapy (17.2% vs 5.6%; P = .04). Grade 2 to 3 pain was more common with 3-dimensional CRT (17.2% vs 5.2%; P = .03). Actuarial 5-year rates of fair or poor radiation oncologist-reported cosmetic outcome were 9% for 3-dimensional CRT and 24% for brachytherapy (P = .13). Brachytherapy was significantly associated with inferior cosmesis on mixed model analysis (P = .003). Significant predictors of reduced risk of adverse cosmetic outcome after brachytherapy were D0.1cc (skin) ≤102%, minimum skin distance >5.1 mm, dose homogeneity index >0.54, and volume of nonconformance ≤0.89 cc. The 5-year ipsilateral breast recurrence was 4.3% for brachytherapy and 4.2% for 3-dimensional CRT APBI patients (P = .95).Conclusions
Brachytherapy APBI is associated with higher rates of grade 1 fibrosis and seroma than 3-dimensional CRT but lower rates of grade 1 edema and grade 2 to 3 pain than 3-dimensional CRT. Rates of radiation oncologist-reported fair or poor cosmetic outcomes are higher with brachytherapy. We identified dosimetric parameters that predict reduced risk of adverse cosmetic outcome after brachytherapy-based APBI. Ipsilateral breast recurrence was equivalent for brachytherapy and 3-dimensional CRT. 相似文献6.
Total hip replacement revision surgery is accompanied by significant blood loss. Using rotational thrombelastometry (ROTEM) perioperatively to diagnose coagulopathy may help to provide rapid aimed therapy and thus decrease blood loss and the consumption of transfusion products. The aim of this case-control study was to find out whether point of care using of ROTEM may reduce blood loss and the consumption of blood transfusion products in hip replacement revision surgery.Data were prospectively collected from patients who underwent hip replacement revision surgery in the period 2017 to 2018 when the management of bleeding and coagulopathy was based on the results of ROTEM. Data were compared with a group of historical controls for the period 2015 to 2016 when bleeding and coagulopathy management was not based on ROTEM results. The consumption of blood transfusion products and perioperative blood loss were compared between the groups.The total number of analyzed patients was 90. Forty five patients were analyzed in the ROTEM group and the same number of patients were analyzed in the non-ROTEM group. Significantly decreased perioperative consumption of fresh frozen plasma and packed red blood cells was found in the ROTEM, as well as decreased perioperative blood loss comparing to non-ROTEM group. All data were statistically different with P < .05.Perioperative management of bleeding and coagulopathy based on the results of ROTEM during hip replacement revision surgery seems to help to decrease perioperative blood loss and the consumption of blood transfusion products, especially fresh frozen plasma. 相似文献
7.
Stella Mazurova Marketa Tesarova Jiri Zeman Viktor Stranecky Hana Hansikova Alica Baxova Maria Giertlova Jana Lastuvkova Vanda Chovanova Simona Rusnakova Maria Knapkova Gabriel Minarik Tomas Honzik Martin Magner 《The Journal of dermatology》2020,47(6):663-668
Epidermal growth factor receptor (EGFR) is a transmembrane glycoprotein with tyrosine-kinase signaling activity, involved in many cellular functions including cell growth and differentiation. Germ line loss-of-function mutations in EGFR lead to a severe neonatal skin disorder (Online Mendelian Inheritance in Man #131550). We report 18 premature Roma children from 16 families with birthweights ranging 440–1470 g and multisystem diseases due to the homozygous mutation c.1283G˃A (p.Gly428Asp) in EGFR. They presented with thin, translucent, fragile skin (14/15), skin desquamation (10/17), ichthyosis (9/17), recurrent skin infections and sepsis (9/12), nephromegaly (10/16) and congenital heart defects (7/17). Their prognosis was poor, and all died before the age of 6 months except one 13-year-old boy with a severe skin disorder, dentinogenesis imperfecta, Fanconi-like syndrome and secondary hyperaldosteronism. Management of ion and water imbalances and extremely demanding skin care may improve the unfavorable outcome of such patients. 相似文献
8.
Madan M. Rehani Emily R. Melick Raza M. Alvi Ruhani Doda Khera Salma Batool-Anwar Tomas G. Neilan Michael Bettmann 《European radiology》2020,30(4):1839-1846
To determine percent of patients without malignancy and ≤ 40 years of age with high cumulative radiation doses through recurrent CT exams and assess imaging appropriateness. From the cohort of patients who received cumulative effective dose (CED) of ≥ 100 mSv over a 5-year period, a sub-set was identified with non-malignant disease. The top 50 clinical indications leading to multiple CTs were determined. Clinical decision support (CDS) system scores were analyzed using a widely adopted standard of 1–3 (red) as “not usually appropriate,” 4–6 (yellow) “may or may not be appropriate,” and 7–9 (green) “usually appropriate.” Clinicians reviewed patient records to assess compliance with appropriate use criteria (AUC). 9.6% of patients in our series were with non-malignant conditions and 1.4% with age ≤ 40 years. CDS scores (rounded) were 2% red, 38% yellow, 27% green, and 33% unscored CTs. Clinical society guidelines for CT exams, wherever available, were followed in 87.5 to 100% of cases. AUCs were not available for several clinical indications as also referral guidelines for serial CT imaging. More than half of CT exams were unrelated to follow-up of a primary chronic disease. We are faced with a situation wherein patients in age ≤ 40 years require or are thought to require many CT exams over the course of a few years but the radiation risk creates concern. There is a fair number of conditions for which AUC are not available. Suggested solutions include development of CT scanners with lesser radiation dose and further development of appropriateness criteria. 相似文献
9.
EADV Taskforce's recommendations on measurement of health‐related quality of life in paediatric dermatology 下载免费PDF全文
P. Chernyshov J. de Korte L. Tomas‐Aragones S. Lewis‐Jones the EADV Quality of Life Task Force 《Journal of the European Academy of Dermatology and Venereology》2015,29(12):2306-2316
The impact of skin conditions in children can profoundly affect a variety of lifestyle parameters that may have important personal consequences. Several national guidelines for children with different skin conditions recommend health‐related quality of life (HRQoL) measurement as part of the assessment process. HRQoL also plays an important role in educational programmes for children with chronic skin conditions and their parents. In this paper, the EADV Taskforce on Quality of life provides researchers and clinicians data on the achievements in this field, as well as the peculiarities of HRQoL assessment in children, and an overview of the most commonly used and validated generic, dermatology‐specific and disease‐specific instruments related to paediatric dermatology. Finally, an analysis of the current problems of HRQoL assessment in children with skin diseases and directions for future studies are also discussed. The main goal of this paper is to help dermatologists decide which HRQoL instrument to use with children, depending on the context. 相似文献
10.
Vania Pereira Carmen Tomas Juan J Sanchez Denise Syndercombe-Court António Amorim Leonor Gusm?o Maria Jo?o Prata Niels Morling 《European journal of human genetics : EJHG》2015,23(2):245-251
The peopling of Greenland has a complex history shaped by population migrations, isolation and genetic drift. The Greenlanders present a genetic heritage with components of European and Inuit groups; previous studies using uniparentally inherited markers in Greenlanders have reported evidence of a sex-biased, admixed genetic background. This work further explores the genetics of the Greenlanders by analysing autosomal and X-chromosomal data to obtain deeper insights into the factors that shaped the genetic diversity in Greenlanders. Fourteen Greenlandic subsamples from multiple geographical settlements were compared to assess the level of genetic substructure in the Greenlandic population. The results showed low levels of genetic diversity in all sets of the genetic markers studied, together with an increased number of X-chromosomal loci in linkage disequilibrium in relation to the Danish population. In the broader context of worldwide populations, Greenlanders are remarkably different from most populations, but they are genetically closer to some Inuit groups from Alaska. Admixture analyses identified an Inuit component in the Greenlandic population of approximately 80%. The sub-populations of Ammassalik and Nanortalik are the least diverse, presenting the lowest levels of European admixture. Isolation-by-distance analyses showed that only 16% of the genetic substructure of Greenlanders is most likely to be explained by geographic barriers. We suggest that genetic drift and a differentiated settlement history around the island explain most of the genetic substructure of the population in Greenland. 相似文献