全文获取类型
收费全文 | 59658篇 |
免费 | 4577篇 |
国内免费 | 133篇 |
专业分类
耳鼻咽喉 | 478篇 |
儿科学 | 2220篇 |
妇产科学 | 1512篇 |
基础医学 | 8478篇 |
口腔科学 | 1380篇 |
临床医学 | 7878篇 |
内科学 | 11950篇 |
皮肤病学 | 1044篇 |
神经病学 | 5892篇 |
特种医学 | 1417篇 |
外科学 | 5793篇 |
综合类 | 531篇 |
一般理论 | 66篇 |
预防医学 | 6972篇 |
眼科学 | 830篇 |
药学 | 3455篇 |
2篇 | |
中国医学 | 62篇 |
肿瘤学 | 4408篇 |
出版年
2023年 | 513篇 |
2022年 | 645篇 |
2021年 | 1445篇 |
2020年 | 1089篇 |
2019年 | 1568篇 |
2018年 | 1866篇 |
2017年 | 1488篇 |
2016年 | 1690篇 |
2015年 | 1717篇 |
2014年 | 2125篇 |
2013年 | 3272篇 |
2012年 | 4478篇 |
2011年 | 4608篇 |
2010年 | 2484篇 |
2009年 | 2236篇 |
2008年 | 3846篇 |
2007年 | 3947篇 |
2006年 | 3849篇 |
2005年 | 3656篇 |
2004年 | 3504篇 |
2003年 | 3231篇 |
2002年 | 2956篇 |
2001年 | 577篇 |
2000年 | 525篇 |
1999年 | 527篇 |
1998年 | 578篇 |
1997年 | 453篇 |
1996年 | 393篇 |
1995年 | 389篇 |
1994年 | 314篇 |
1993年 | 302篇 |
1992年 | 337篇 |
1991年 | 286篇 |
1990年 | 260篇 |
1989年 | 217篇 |
1988年 | 252篇 |
1987年 | 173篇 |
1986年 | 207篇 |
1985年 | 217篇 |
1984年 | 204篇 |
1983年 | 181篇 |
1982年 | 185篇 |
1981年 | 162篇 |
1980年 | 145篇 |
1979年 | 134篇 |
1978年 | 104篇 |
1977年 | 84篇 |
1976年 | 81篇 |
1973年 | 85篇 |
1972年 | 73篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
6.
The association between family affluence and smoking among 15‐year‐old adolescents in 33 European countries,Israel and Canada: the role of national wealth 下载免费PDF全文
7.
8.
Bj?rn Stessel Audrey A. Fiddelers Elbert A. Joosten Daisy M.N. Hoofwijk Hans-Fritz Gramke Wolfgang F.F.A. Buhre 《Medicine》2015,94(39)
Traditionally, major complications and unanticipated admission/readmission rates were used to assess outcome after day surgery. However, in view of the relative absence of major complications the quality of recovery (QOR) should be considered one of the principal endpoints after day surgery. In our study, the level of QOR is defined by a combination of the Global Surgical Recovery (GSR) Index and the Quality of Life (QOL).The aim of this study was to analyze prevalence and predictors of QOR after day surgery on the fourth postoperative day.Elective patients scheduled for day surgery from November 2008 to April 2010 were enrolled in a prospective cohort study. Outcome parameters were measured by using questionnaire packages at 2 time points: 1 week preoperatively and 4 days postoperatively. Primary outcome parameter is the QOR and is defined as good if the GSR index >80% as well as the postoperative QOL is unchanged or improved as compared with baseline. QOR is defined as poor if both the GSR index ≤80% and if the postoperative QOL is decreased as compared with baseline. QOR is defined as intermediate in all other cases. Three logistic regression analyses were performed to determine predictors for poor QOR after day surgery.A total of 1118 patients were included. A good QOR was noted in 17.3% of patients, an intermediate QOR in 34.8%, and a poor QOR in 47.8% 4 days after day surgery. The best predictor for poor QOR after day surgery was type of surgery. Other predictors were younger age, work status, and longer duration of surgery. A history of previous surgery, expected pain (by the patient) and high long-term surgical fear were significant predictors of poor QOR in only 1 of 3 prediction models.The QOR at home 4 days after day surgery was poor in the majority of patients and showed a significant procedure-specific variation. Patients at risk for poor QOR can be identified during the preoperative period based on type of surgery, age, work status, and the duration of the surgery. 相似文献
9.
Renaud Snanoudj Nassim Kamar Elisabeth Cassuto Sophie Caillard Marie Metzger Pierre Merville Antoine Thierry Isabelle Jollet Philippe Grimbert Dany Anglicheau Marc Hazzan Gabriel Choukroun Bruno Hurault De Ligny Bénedicte Janbon Vincent Vuiblet Anne Devys Yann Le Meur Michel Delahousse Jean-Luc Taupin 《Kidney international》2019,95(6):1471-1485
10.