首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2579387篇
  免费   208647篇
  国内免费   7692篇
耳鼻咽喉   34508篇
儿科学   84878篇
妇产科学   72171篇
基础医学   360393篇
口腔科学   74585篇
临床医学   231180篇
内科学   512779篇
皮肤病学   58506篇
神经病学   211351篇
特种医学   104309篇
外国民族医学   720篇
外科学   395903篇
综合类   63509篇
现状与发展   5篇
一般理论   911篇
预防医学   205345篇
眼科学   57412篇
药学   187858篇
  8篇
中国医学   4587篇
肿瘤学   134808篇
  2018年   25037篇
  2016年   22787篇
  2015年   26006篇
  2014年   36144篇
  2013年   54742篇
  2012年   70200篇
  2011年   74737篇
  2010年   45545篇
  2009年   43917篇
  2008年   70792篇
  2007年   75101篇
  2006年   76618篇
  2005年   74281篇
  2004年   72163篇
  2003年   69659篇
  2002年   67147篇
  2001年   120166篇
  2000年   123855篇
  1999年   104333篇
  1998年   30388篇
  1997年   27462篇
  1996年   28106篇
  1995年   27825篇
  1994年   26141篇
  1993年   24568篇
  1992年   86964篇
  1991年   84739篇
  1990年   82059篇
  1989年   78971篇
  1988年   73464篇
  1987年   72347篇
  1986年   68524篇
  1985年   66249篇
  1984年   50214篇
  1983年   42791篇
  1982年   26054篇
  1981年   23412篇
  1980年   22063篇
  1979年   46895篇
  1978年   33310篇
  1977年   28184篇
  1976年   26222篇
  1975年   27649篇
  1974年   33298篇
  1973年   32009篇
  1972年   29479篇
  1971年   27568篇
  1970年   25302篇
  1969年   23770篇
  1968年   21859篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
83.
On 8 April 2014, a US jury ordered Takeda and Eli Lilly to pay $9 bn in punitive damages after finding that they had concealed the cancer risks associated with pioglitazone. By contrast, on 28 August 2014, the long‐awaited outcome of the 10‐year Kaiser Permanente Northern California study was announced. That study was specifically designed to investigate whether patients exposed to pioglitazone were at an increased risk of bladder cancer and found no association; thus, at last, the controversial issue has been resolved. A review, in retrospect, of the story of the proposed link between pioglitazone and bladder cancer reveals flaws at every stage. In 2012, a BMJ editorial, in keeping with some other contemporary reports, stated ‘it can confidently be assumed that pioglitazone increases the risk of bladder cancer’. Examination of the information which led to such a statement shows that: 1) the pre‐clinical findings of bladder cancer in male rats is not indicative of human risk; 2) there is no association between bladder cancer and pioglitazone in randomized controlled trials, once cases that could not plausibly be related to treatment are removed; and 3) the observational studies that have suggested a link have over‐extrapolated from the data: pioglitazone‐treated patients had more risk factors for bladder cancer than those not treated with pioglitazone. Meanwhile careful study of randomized controlled trials shows evidence of cardiovascular benefit from pioglitazone in Type 2 diabetes, a condition which results, more than anything, in premature cardiovascular death and morbidity.  相似文献   
84.
85.
While peer support has been investigated in multiple clinical contexts, its application to the postpartum setting is unknown. The aim was to assess acceptability of a postpartum peer support program for women with diabetes. Observational survey-based needs assessment of forty low-income women with diabetes, receiving care at a major medical institution. Mean age and gravidity were 30.7 years and 3.15 ± 1.67 respectively. 45 % expressed interest in a “buddy.” There was no significant difference between groups desiring and not desiring this program. A majority of respondents desired telephone, text messaging, and in-person contacts (79.2, 72.1, 83.8 %), with 72.5 % of patients desiring diabetes-related activities during clinic waiting time. Many women desire a postpartum diabetes reciprocal peer program for support outside of clinician visits. Patients are receptive to educational services during their wait and outside of clinic time, a potentially valuable opportunity to share important health information.  相似文献   
86.
87.
88.
89.
90.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号