全文获取类型
收费全文 | 23965篇 |
免费 | 2245篇 |
国内免费 | 685篇 |
专业分类
耳鼻咽喉 | 176篇 |
儿科学 | 261篇 |
妇产科学 | 206篇 |
基础医学 | 980篇 |
口腔科学 | 567篇 |
临床医学 | 3815篇 |
内科学 | 1755篇 |
皮肤病学 | 169篇 |
神经病学 | 832篇 |
特种医学 | 611篇 |
外国民族医学 | 7篇 |
外科学 | 1387篇 |
综合类 | 3542篇 |
现状与发展 | 1篇 |
一般理论 | 1篇 |
预防医学 | 5865篇 |
眼科学 | 123篇 |
药学 | 3462篇 |
83篇 | |
中国医学 | 2427篇 |
肿瘤学 | 625篇 |
出版年
2025年 | 8篇 |
2024年 | 480篇 |
2023年 | 696篇 |
2022年 | 1027篇 |
2021年 | 1169篇 |
2020年 | 1280篇 |
2019年 | 1020篇 |
2018年 | 909篇 |
2017年 | 968篇 |
2016年 | 1019篇 |
2015年 | 962篇 |
2014年 | 1780篇 |
2013年 | 1939篇 |
2012年 | 1602篇 |
2011年 | 1633篇 |
2010年 | 1258篇 |
2009年 | 1177篇 |
2008年 | 1083篇 |
2007年 | 1051篇 |
2006年 | 922篇 |
2005年 | 734篇 |
2004年 | 630篇 |
2003年 | 534篇 |
2002年 | 402篇 |
2001年 | 370篇 |
2000年 | 301篇 |
1999年 | 291篇 |
1998年 | 240篇 |
1997年 | 183篇 |
1996年 | 169篇 |
1995年 | 133篇 |
1994年 | 134篇 |
1993年 | 98篇 |
1992年 | 105篇 |
1991年 | 81篇 |
1990年 | 69篇 |
1989年 | 64篇 |
1988年 | 57篇 |
1987年 | 37篇 |
1986年 | 46篇 |
1985年 | 50篇 |
1984年 | 44篇 |
1983年 | 19篇 |
1982年 | 19篇 |
1981年 | 20篇 |
1980年 | 27篇 |
1979年 | 8篇 |
1978年 | 17篇 |
1977年 | 11篇 |
1975年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Jessica K. Salwen-Deremer Jennifer M. Lauretti Kelly A. Aschbrenner Leslie Heinberg Stephen J. Ritz Stephanie Sogg 《Surgery for obesity and related diseases》2021,17(6):1182-1189
BackgroundA psychosocial evaluation is an important component of the preoperative assessment process for people seeking metabolic and bariatric surgery (MBS), and is required for accreditation of MBS programs. Recently, independent companies without affiliations with MBS programs have been marketing remotely administered, unaffiliated psychosocial evaluations for MBS (RUS), and American Society for Metabolic and Bariatric Surgery (ASMBS) members have raised concerns about these evaluations.ObjectivesTo explore ASMBS members’ beliefs about RUS.SettingOnline survey.MethodsWe developed a survey to evaluate ASMBS members’ opinions, experiences, and/or concerns about in-person and RUS psychosocial evaluations for MBS.ResultsIn total, 635 ASMBS members responded to the online survey and 156 responded to an open-ended question on RUS. Responses were coded based on a manual developed for this study, yielding themes of concerns about the quality of RUS, lack of ongoing relationships in RUS, and conditions under which/reasons why RUS evaluations could be acceptable.ConclusionRespondents expressed both interest in and concerns about RUS in pre-MBS psychosocial evaluations. Use of RUS has the potential to improve access to MBS by providing a convenient and efficient means of completing the psychosocial evaluation. Conversely, respondents expressed concerns about the background and training of RUS providers, the quality of the reports, and the limited relationships between the RUS provider and both the MBS patient and the MBS team. We discuss the clinical and research implications of response themes, particularly for patients in rural areas or those who have other barriers to care. 相似文献
33.
34.
35.
Rodney C. G. Franklin David J. Spiegelhalter Fergus J. Macartney Kate Bull 《Journal of clinical monitoring and computing》1990,6(3):157-166
When a new-born baby with congenital heart disease is referred to a regional specialist centre, the transportation management is crucial but must be decided on the basis of clinical information obtained over the telephone. We consider algorithmic and naive statistical approaches to helping in this decision, and on the basis of preliminary results the relative strengths and weaknesses are discussed. A synthesised logical and probabilistic approach appears to have the best potential and could be implemented on hand-held computers.Paper presented at symposium on Computer-assisted Decision Support and Database Management in Anaesthesia, Intensive Care and Cardio-pulmonary Medicine, Rotterdam, 1988. 相似文献
36.
Grummer-Strawn LM Rice SP Dugas K Clark LD Benton-Davis S 《Maternal and child health journal》1997,1(1):35-42
Objective: This study evaluates the effectiveness of a peer counseling program at increasing breastfeeding by participants in the Mississippi Special Supplemental Nutrition Program for Women, Infants and Children (WIC). Methods: Data from the 1989–1993 Pediatric Nutrition Surveillance System were analyzed to compare breastfeeding rates in clinics with and without peer counseling programs. A questionnaire completed by program staff to describe the program in greater detail helped identify characteristics associated with greater success. Results: The incidence of breastfeeding rose from 12.3% to 19.9% in those clinics with peer counseling programs, but only from 9.2% to 10.7% in clinics without a program. Clinics that started a program earlier showed greater changes in breastfeeding incidence. However, the presence of lactation specialists or consultants in the clinic appeared to be more important than the presence of less-trained peer counselors. Peer counselors who spent more than 45 minutes per participant were more effective than those spending less time. Conclusions: The peer counseling program significantly increased the incidence of breastfeeding, particularly in clinics with lactation specialists and consultants. Success can be enhanced by ensuring that peer counselors spend a great deal of time with the participants. 相似文献
37.
The Effect of Completeness of Medical Records on the Determination of Appropriateness of Hospital Days 总被引:1,自引:1,他引:0
38.
39.
This article presents findings from a survey of programmes available for tobacco and alcohol users working in 455 of Australia's top 600 companies. Companies were twice as likely to have programmes for smokers (43%) as for problem drinkers (24%) and these programmes were more apparent in large companies. The majority of programmes for smoking were delivered within a health promotion context which included other life-style issues, such as nutrition, exercise, weight management and stress management. Although Employee Assistance Programs (EAPs) were the most commonly available type of work-place programme for excessive drinkers and other drug users, followed by Alcoholics Anonymous and local hospital clinics, only 6% had an EAP for alcohol. Only 21% of programmes for smokers and 12% for excessive alcohol users were evaluated. Around one-quarter of companies knew the costs of smoking programmes, and 9% reported costs of conducting programmes for excessive alcohol consumers. 相似文献
40.