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   1599867篇
  免费   133406篇
  国内免费   2577篇
耳鼻咽喉   21699篇
儿科学   52928篇
妇产科学   46225篇
基础医学   227782篇
口腔科学   47196篇
临床医学   140905篇
内科学   314779篇
皮肤病学   34090篇
神经病学   130134篇
特种医学   64722篇
外国民族医学   474篇
外科学   243801篇
综合类   39712篇
现状与发展   3篇
一般理论   544篇
预防医学   122861篇
眼科学   36470篇
药学   121253篇
  3篇
中国医学   2974篇
肿瘤学   87295篇
  2018年   14764篇
  2016年   12901篇
  2015年   15031篇
  2014年   20648篇
  2013年   31357篇
  2012年   42550篇
  2011年   44756篇
  2010年   26345篇
  2009年   25315篇
  2008年   43011篇
  2007年   45252篇
  2006年   46060篇
  2005年   44689篇
  2004年   44093篇
  2003年   42190篇
  2002年   41300篇
  2001年   75684篇
  2000年   78330篇
  1999年   66393篇
  1998年   17732篇
  1997年   16335篇
  1996年   16314篇
  1995年   16019篇
  1994年   15071篇
  1993年   14217篇
  1992年   55429篇
  1991年   53776篇
  1990年   52561篇
  1989年   50832篇
  1988年   47222篇
  1987年   46560篇
  1986年   44284篇
  1985年   42843篇
  1984年   32033篇
  1983年   27566篇
  1982年   16144篇
  1981年   14436篇
  1980年   13564篇
  1979年   30460篇
  1978年   21064篇
  1977年   17764篇
  1976年   16694篇
  1975年   17574篇
  1974年   21486篇
  1973年   20672篇
  1972年   18853篇
  1971年   17770篇
  1970年   16289篇
  1969年   15268篇
  1968年   13949篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
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   
103.
Graefe's Archive for Clinical and Experimental Ophthalmology - Retinal microvascular endothelial dysfunction is thought to be of importance in the development of ocular vascular diseases....  相似文献   
104.
105.
106.
The first COVID-19 vaccination was given in December 2020 and there is an effort to vaccinate the international population on a massive scale. Common side effects from the vaccine include headache and tiredness. Regional lymphadenopathy has been described in relation to other vaccines. We describe two cases of supraclavicular reactive lymphadenopathy presenting in patients who had the COVID vaccination in the ipsilateral arm. Awareness of this diagnosis is important for patients presenting to the neck lump clinic.  相似文献   
107.
108.
Journal of Behavioral Medicine - Understanding associations between mothers’ and children’s physical activity and sedentary behavior on more fine-grained timescales can provide insights...  相似文献   
109.
110.
The aim of this study was to analyse the effect of body mass index (BMI), both low and high values, on the perioperative complication rate in patients with oral squamous cell carcinoma (OSCC). The medical records of 259 patients operated between 2014 and 2017 for OSCC were reviewed. Univariate and multivariate analyses were performed. Sixty of the 259 patients developed 87 complications. Low or high BMI was not associated with the perioperative complication rate. A longer operating time and increased blood loss were associated with a higher perioperative complication rate and higher Clavien–Dindo grade. Low BMI, American Society of Anesthesiologists score 2 and 3, a longer operating time, and increased blood loss were associated with a longer hospital stay. Low BMI was associated with a longer hospital stay. Neither low nor high BMI was associated with the perioperative complication rate. A longer operating time and increased blood loss were associated with a higher perioperative complication rate and higher Clavien–Dindo grade.  相似文献   
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