全文获取类型
收费全文 | 67773篇 |
免费 | 5479篇 |
国内免费 | 723篇 |
专业分类
耳鼻咽喉 | 590篇 |
儿科学 | 1034篇 |
妇产科学 | 1256篇 |
基础医学 | 2316篇 |
口腔科学 | 896篇 |
临床医学 | 13953篇 |
内科学 | 5779篇 |
皮肤病学 | 591篇 |
神经病学 | 2042篇 |
特种医学 | 1115篇 |
外国民族医学 | 1篇 |
外科学 | 6587篇 |
综合类 | 10528篇 |
现状与发展 | 3篇 |
一般理论 | 3篇 |
预防医学 | 15634篇 |
眼科学 | 342篇 |
药学 | 6848篇 |
139篇 | |
中国医学 | 1994篇 |
肿瘤学 | 2324篇 |
出版年
2024年 | 156篇 |
2023年 | 1389篇 |
2022年 | 2703篇 |
2021年 | 3525篇 |
2020年 | 3976篇 |
2019年 | 2874篇 |
2018年 | 2677篇 |
2017年 | 2607篇 |
2016年 | 2615篇 |
2015年 | 2520篇 |
2014年 | 6265篇 |
2013年 | 5463篇 |
2012年 | 5029篇 |
2011年 | 5072篇 |
2010年 | 3981篇 |
2009年 | 3587篇 |
2008年 | 3522篇 |
2007年 | 3176篇 |
2006年 | 2742篇 |
2005年 | 2127篇 |
2004年 | 1713篇 |
2003年 | 1289篇 |
2002年 | 910篇 |
2001年 | 709篇 |
2000年 | 616篇 |
1999年 | 500篇 |
1998年 | 408篇 |
1997年 | 335篇 |
1996年 | 278篇 |
1995年 | 219篇 |
1994年 | 173篇 |
1993年 | 171篇 |
1992年 | 112篇 |
1991年 | 110篇 |
1990年 | 63篇 |
1989年 | 49篇 |
1988年 | 51篇 |
1987年 | 38篇 |
1986年 | 29篇 |
1985年 | 52篇 |
1984年 | 32篇 |
1983年 | 29篇 |
1982年 | 21篇 |
1981年 | 24篇 |
1980年 | 16篇 |
1979年 | 5篇 |
1978年 | 7篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1970年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Yasmine Yousef Etienne St-Louis Robert Baird Emily R. Smith Elena Guadagno Dickens St-Vil Dan Poenaru 《Journal of pediatric surgery》2019,54(4):831-837
Background
The Lancet Commission on Global Surgery highlighted global surgical need but offered little insight into the specific surgical challenges of children in low-resource settings. Efforts to strengthen the quality of global pediatric surgical care have resulted in a proliferation of partnerships between low-and middle-income countries (LMICs) and high-income countries (HICs). Standardized tools able to reliably measure gaps in delivery and quality of care are important aids for these partnerships. We undertook a systematic review (SR) of capacity assessment tools (CATs) focused on needs assessment in pediatric surgery.Methods
A comprehensive search strategy of multiple electronic databases was conducted per PRISMA guidelines without linguistic or temporal restrictions. CATs were selected according to pre-defined inclusion criteria. Articles were assessed by two independent reviewers. Methodological quality of studies was appraised using the COSMIN checklist with 4-point scale.Results
The search strategy generated 16,641 original publications, of which three CATs were deemed eligible. Eligible tools were either excessively detailed or oversimplified. None used weighted scores to identify finer granularity between institutions. No CATs comprehensively included measures of resources, outcomes, accessibility/impact and training.Discussion
The results of this study identify the need for a CAT capable of objectively measuring key aspects of surgical capacity and performance in a weighted tool designed for pediatric surgical centers in LMICs.Type of Study
Systematic Review.Level of Evidence
II. 相似文献42.
43.
44.
45.
46.
47.
DNA mixture interpretation can produce opposing conclusions by qualified forensic analysts, even within the same laboratory. The long-delayed publication of the National Institutes of Standards and Technology (NIST) study of 109 North American crime laboratories in this journal demonstrates this most clearly. This latest study supports earlier work that shows common methods such as the Combined Probability of Inclusion (CPI) have wrongly included innocent people as contributors to DNA mixtures. The 2016 President's Council of Advisors on Science and Technology report concluded, “In summary, the interpretation of complex DNA mixtures with the CPI statistic has been an inadequately specified—and thus inappropriately subjective—method. As such, the method is clearly not foundationally valid” [7]. The adoption of probabilistic genotyping by many laboratories will certainly prevent some of these errors from occurring in the future, but the same laboratories that produced past errors can also now review old cases with their new software—without additional bench work. It is critical that laboratories adopt procedures and policies to do this. 相似文献
48.
近几年,"劳务派遣"成了医疗机构终末消毒、保洁、垃圾回收等工作新的用工形式。由于多数用工单位和用人单位不清楚对劳务派遣人员职业健康管理中各自应承担的责任和义务,以至于劳务派遣工在劳动过程中应享有的劳动保护权益未获得切实保障。本文就某医疗机构核医学工作场所劳务派遣保洁人员的职业健康管理监督案例进行讨论。 相似文献
49.
50.