全文获取类型
收费全文 | 10079篇 |
免费 | 855篇 |
国内免费 | 54篇 |
专业分类
耳鼻咽喉 | 48篇 |
儿科学 | 280篇 |
妇产科学 | 290篇 |
基础医学 | 1560篇 |
口腔科学 | 209篇 |
临床医学 | 1114篇 |
内科学 | 2032篇 |
皮肤病学 | 193篇 |
神经病学 | 1060篇 |
特种医学 | 309篇 |
外国民族医学 | 7篇 |
外科学 | 846篇 |
综合类 | 46篇 |
一般理论 | 2篇 |
预防医学 | 1198篇 |
眼科学 | 94篇 |
药学 | 714篇 |
中国医学 | 19篇 |
肿瘤学 | 967篇 |
出版年
2024年 | 17篇 |
2023年 | 114篇 |
2022年 | 112篇 |
2021年 | 277篇 |
2020年 | 215篇 |
2019年 | 236篇 |
2018年 | 276篇 |
2017年 | 252篇 |
2016年 | 305篇 |
2015年 | 304篇 |
2014年 | 431篇 |
2013年 | 728篇 |
2012年 | 747篇 |
2011年 | 867篇 |
2010年 | 484篇 |
2009年 | 444篇 |
2008年 | 674篇 |
2007年 | 699篇 |
2006年 | 668篇 |
2005年 | 618篇 |
2004年 | 540篇 |
2003年 | 460篇 |
2002年 | 437篇 |
2001年 | 97篇 |
2000年 | 87篇 |
1999年 | 99篇 |
1998年 | 94篇 |
1997年 | 101篇 |
1996年 | 77篇 |
1995年 | 55篇 |
1994年 | 60篇 |
1993年 | 50篇 |
1992年 | 56篇 |
1991年 | 42篇 |
1990年 | 28篇 |
1989年 | 32篇 |
1988年 | 21篇 |
1987年 | 19篇 |
1986年 | 13篇 |
1985年 | 17篇 |
1984年 | 13篇 |
1983年 | 15篇 |
1982年 | 12篇 |
1981年 | 12篇 |
1980年 | 14篇 |
1979年 | 7篇 |
1977年 | 11篇 |
1976年 | 7篇 |
1975年 | 9篇 |
1973年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Kamolz Lars-Peter Kotzbeck Petra Schintler Michael Spendel Stephan 《European Surgery》2022,54(3):163-169
European Surgery - Large skin defects caused by trauma (e.g., burns) or due to other reasons (e.g., tumor-related skin resections) require sufficient skin replacement. The constant improvement of... 相似文献
2.
3.
Judith Brock Andreas Schmid Thomas Karrasch Petra Pfefferle Jutta Schlegel Inga Busse Annette Hauenschild Barbara Schmidt Maria Koukou Efthymia Arapogianni Andreas Schultz Miriam Thomalla Secil Akinci Johannes Kruse Winfried Padberg Andreas Schffler Jens Albrecht 《Clinical endocrinology》2019,91(3):400-410
4.
5.
6.
Elizabeth A. Mosley PhD MPH Amy J. Schulz PhD MPH MSW Lisa H. Harris MD PhD Barbara A. Anderson PhD 《Women & health》2020,60(7):806-820
ABSTRACT Abortion is legal in South Africa, but negative abortion attitudes remain common and are poorly understood. We used nationally representative South African Social Attitudes Survey data to analyze abortion attitudes in the case of fetal anomaly and in the case of poverty from 2007 to 2016 (n = 20,711; ages = 16+). We measured correlations between abortion attitudes and these important predictors: religiosity, attitudes about premarital sex, attitudes about preferential hiring and promotion of women, and attitudes toward family gender roles. Abortion acceptability for poverty increased over time (b = 0.05, p < .001), but not for fetal anomaly (b = ?0.008, p = .284). Highly religious South Africans reported lower abortion acceptability in both cases (Odds Ratio (OR)anomaly = 0.85, p = .015; ORpoverty = 0.84, p = .02). Premarital sex acceptability strongly and positively predicted abortion acceptability (ORanomaly = 2.63, p < .001; ORpoverty = 2.46, p < .001). Attitudes about preferential hiring and promotion of women were not associated with abortion attitudes, but favorable attitudes about working mothers were positively associated with abortion acceptability for fetal anomaly ((ORanomaly = 1.09, p = .01; ORpoverty = 1.02, p = .641)). Results suggest negative abortion attitudes remain common in South Africa and are closely tied to religiosity, traditional ideologies about sexuality, and gender role expectations about motherhood. 相似文献
7.
8.
9.
10.
José Roberto Jurado Jorge Hernán Santos Nieto Jairo Ospina Gaitán Constanza Garzón Bonilla Ricardo Villarreal David Acevedo Laura Cabrera Luis Felipe Cabrera Mauricio Pedraza 《Arab Journal Of Gastroenterology》2021,22(2):170-173
Background and study aimsThe COVID-19 outbreak has reorganized surgical team conditions regarding endoscopy. The number of interventions has been reduced, the number of healthcare professionals must be limited, and both the patients and physicians are more protected than ever.Patients and MethodsIn the highest peak of contagion in Colombia, endoscopy, colonoscopy, and esophagogastroduodenoscopy were performed using a low-cost disposable device. A total of 1388 procedures were performed. Every patient was assessed for symptoms via a telephone call, at the health center, and after the procedure, following specific attention routes.ResultsAfter procedure follow-up, no positive cases of COVID-19 were noted.ConclusionThe methodology reduced the risk of infection during the COVID-19 pandemic. 相似文献