全文获取类型
收费全文 | 22891篇 |
免费 | 2101篇 |
国内免费 | 23篇 |
专业分类
耳鼻咽喉 | 219篇 |
儿科学 | 609篇 |
妇产科学 | 580篇 |
基础医学 | 2703篇 |
口腔科学 | 403篇 |
临床医学 | 2327篇 |
内科学 | 4691篇 |
皮肤病学 | 384篇 |
神经病学 | 2175篇 |
特种医学 | 785篇 |
外国民族医学 | 3篇 |
外科学 | 3423篇 |
综合类 | 509篇 |
一般理论 | 43篇 |
预防医学 | 2490篇 |
眼科学 | 309篇 |
药学 | 1543篇 |
中国医学 | 30篇 |
肿瘤学 | 1789篇 |
出版年
2022年 | 146篇 |
2021年 | 353篇 |
2020年 | 203篇 |
2019年 | 397篇 |
2018年 | 499篇 |
2017年 | 346篇 |
2016年 | 316篇 |
2015年 | 405篇 |
2014年 | 567篇 |
2013年 | 839篇 |
2012年 | 1161篇 |
2011年 | 1189篇 |
2010年 | 742篇 |
2009年 | 661篇 |
2008年 | 1108篇 |
2007年 | 1199篇 |
2006年 | 1198篇 |
2005年 | 1166篇 |
2004年 | 1069篇 |
2003年 | 995篇 |
2002年 | 913篇 |
2001年 | 599篇 |
2000年 | 630篇 |
1999年 | 570篇 |
1998年 | 290篇 |
1997年 | 213篇 |
1996年 | 223篇 |
1995年 | 235篇 |
1994年 | 179篇 |
1993年 | 170篇 |
1992年 | 422篇 |
1991年 | 409篇 |
1990年 | 356篇 |
1989年 | 367篇 |
1988年 | 329篇 |
1987年 | 317篇 |
1986年 | 288篇 |
1985年 | 304篇 |
1984年 | 258篇 |
1983年 | 219篇 |
1982年 | 171篇 |
1981年 | 147篇 |
1979年 | 241篇 |
1978年 | 174篇 |
1977年 | 143篇 |
1974年 | 150篇 |
1973年 | 190篇 |
1972年 | 186篇 |
1971年 | 158篇 |
1969年 | 147篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
L. F. Ross 《American journal of transplantation》2010,10(4):742-746
In 1996, I argued that the recommendation by the Institute of Medicine (IOM) to inform women when tests reveal misattributed paternity and not to disclose this information to the women's partners was morally wrong. I argued in favor of disclosure to both parties. It is a position that I still hold. But claims of misattributed paternity are not ‘incidental findings’ as it was called in the old genetics literature, but a rather serious indictment of biological infidelity. In this paper I argue that the tests used by transplant programs for living donor–recipient compatibility are inadequate to accurately determine misattributed paternity. Further I argue that it is not the responsibility of the transplant community to undertake such serious forensic evaluations. Genetic inconsistencies in ABO and HLA inheritance should be reported as variations. Families who want further clarification should be referred to a genetic professional. 相似文献
992.
993.
Natalie J Collins Kay M Crossley Ross Darnell Bill Vicenzino 《BMC musculoskeletal disorders》2010,11(1):11
Background
Patellofemoral pain syndrome (PFP) is a common musculoskeletal condition that has a tendency to become chronic and problematic in a proportion of affected individuals. The objective of this study was to identify prognostic factors that may have clinical utility in predicting poor outcome on measures of pain and function in individuals with PFP. 相似文献994.
995.
996.
997.
998.
999.
1000.
Ross Mcclure Chapman 《Psychiatry》2013,76(1):1-5
Objective: Although the U.S. Army suicide rate is known to have risen sharply over the past decade, information about medically documented, nonfatal suicidal behaviors is far more limited. Here we examine trends and sociodemographic correlates of suicide attempts, suspicious injuries, and suicide ideation among regular Army soldiers. Methods: Data come from the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS) Historical Administrative Data Study (HADS), which integrates administrative records for all soldiers on active duty during the years 2004 through 2009 (n = 1.66 million). Results: We identified 21,740 unique regular Army soldiers with a nonfatal suicidal event documented at some point during the HADS study period. There were substantial increases in the annual incidence rates of suicide attempts (179–400/100,000 person-years) and suicide ideation (557–830/100,000 person-years), but not suspicious injuries. Using hierarchical classification rules to identify the first instance of each soldier’s most severe behavior, we found increased risk of all outcomes among those who were female, non-Hispanic White, never married, lower-ranking enlisted, less educated, and of younger age when entering Army service. These sociodemographic associations significantly differed across outcomes, despite some patterns that appear similar. Conclusion: Results provide a broad overview of nonfatal suicidal trends in the U.S. Army during 2004 through 2009 and demonstrate that integration of multiple administrative data systems enriches analysis of the predictors of such events. 相似文献