全文获取类型
收费全文 | 5663篇 |
免费 | 271篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 109篇 |
儿科学 | 267篇 |
妇产科学 | 129篇 |
基础医学 | 473篇 |
口腔科学 | 235篇 |
临床医学 | 505篇 |
内科学 | 1318篇 |
皮肤病学 | 103篇 |
神经病学 | 277篇 |
特种医学 | 109篇 |
外科学 | 914篇 |
综合类 | 351篇 |
一般理论 | 4篇 |
预防医学 | 362篇 |
眼科学 | 187篇 |
药学 | 387篇 |
中国医学 | 32篇 |
肿瘤学 | 205篇 |
出版年
2023年 | 86篇 |
2022年 | 279篇 |
2021年 | 397篇 |
2020年 | 183篇 |
2019年 | 200篇 |
2018年 | 227篇 |
2017年 | 151篇 |
2016年 | 185篇 |
2015年 | 245篇 |
2014年 | 281篇 |
2013年 | 287篇 |
2012年 | 426篇 |
2011年 | 398篇 |
2010年 | 231篇 |
2009年 | 195篇 |
2008年 | 303篇 |
2007年 | 289篇 |
2006年 | 297篇 |
2005年 | 276篇 |
2004年 | 228篇 |
2003年 | 213篇 |
2002年 | 169篇 |
2001年 | 46篇 |
2000年 | 49篇 |
1999年 | 35篇 |
1998年 | 28篇 |
1997年 | 18篇 |
1996年 | 19篇 |
1995年 | 13篇 |
1994年 | 15篇 |
1993年 | 7篇 |
1992年 | 22篇 |
1991年 | 19篇 |
1990年 | 19篇 |
1989年 | 13篇 |
1988年 | 15篇 |
1987年 | 13篇 |
1986年 | 7篇 |
1985年 | 10篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1981年 | 4篇 |
1980年 | 5篇 |
1979年 | 6篇 |
1977年 | 5篇 |
1974年 | 6篇 |
1973年 | 4篇 |
1972年 | 4篇 |
1970年 | 5篇 |
1969年 | 4篇 |
排序方式: 共有5967条查询结果,搜索用时 12 毫秒
91.
Yasser M. Aljehani Sharifah A. Othman Nosibah K. Telmesani Raghad A. Alghamdi Hussah M. AlBuainain Zeead M. Alghamdi Hazem M. Zakaria Farouk T. Alreshaid Saleh A. Busbait Abdullah A. Alqarzaie Turki M. Alharbi Ruba K. Alnajim 《Saudi medical journal》2020,41(12):1344
Objectives:To evaluate the impact of coronavirus-19 (COVID-19) pandemic and its consequences on general surgery residents.Methods:Cross-sectional, survey based study including surgical residents in Kingdom of Saudi Arabia and Kingdom of Bahrain.Results:Surgical trainees who participated in our survey (n=234) were young (mean age 28), single (53.8%), and males (65.8%). Approximately half (50.4%) have been deployed to cover the staff shortage in intensive care units (ICUs) or emergency departments (EDs). Half of our trainees (117) scored positive in the screening tool of generalized anxiety disorder (GAD). There was a significant association between experiencing anxiety and male gender (p=0.055), level of training (p=0.002), deployment to cover ICUs (p=0.050), testing positive for COVID-19 (p=0.054) and having an infected family member (p=0.004).Conclusion:Coronavirus-19 pandemic has a serious effect on all healthcare workers and surgical residents have experienced a considerable amount of stress. Accordingly, this psychological burden should be appropriately addressed in organizations planning strategies. We suggest formulating guidelines to help surgical trainees to continue their learning process with least psychological burden. 相似文献
92.
93.
Lorcan P. McGarvey Claire A. Butler Susan Stokesberry Liam Polley Stephen McQuaid Hani’ah Abdullah Sadaf Ashraf Mary K. McGahon Tim M. Curtis Joe Arron David Choy Tim J. Warke Peter Bradding Madeleine Ennis Alexander Zholos Richard W. Costello Liam G. Heaney 《The Journal of allergy and clinical immunology》2014
94.
95.
96.
SK Das AS Golam Faruque AK Chowdhury MJ Chisti MA Hossain MA Salam T Ahmed A Al Mamun 《Atherosclerosis》2012,223(2):454-457
ObjectiveSerum lipoprotein is the most important predictor for microvascular diseases, and may be influenced by rapid urbanization. Currently available data are limited, particularly regarding age-specific lipoprotein status in urban Bangladeshi populations.MethodsBlood lipoprotein levels of 51,353 male and female individuals primarily residing in urban Bangladesh were analyzed. De-identified data (collected between January 2005 and December 2011) were extracted from the Clinical Biochemistry Laboratory Data Archive of International Centre for Diarrheal Disease Research, Bangladesh (icddr,b). For analyses, six age categories were created: (i) <20 years, n = 481; (ii) 20–29 years, n = 1602; (iii) 30–39 years, n = 7272; (iv) 40–49 years, n = 13,582; (v) 50–59 years, n = 15,890; and (vi) 60 years and more, n = 12,526.ResultsMean serum levels of TC, LDL, TG, LDL:HDL and TC:HDL were significantly higher among adults 30–39 years old compared to other age groups, regardless of sex. The proportion of high TC and LDL from 2005 to 2011 among individuals aged 30–39 years old varied widely (p < 0.01 for trend and all pairwise tests).Conclusion30–39 years old individuals had higher concentration of lipoprotein, which increases microvascular disease risk. Further population-based studies are needed to validate our observations in rural areas of Bangladesh. 相似文献
97.
98.
99.
100.