全文获取类型
收费全文 | 9921篇 |
免费 | 822篇 |
国内免费 | 34篇 |
专业分类
耳鼻咽喉 | 140篇 |
儿科学 | 320篇 |
妇产科学 | 192篇 |
基础医学 | 1427篇 |
口腔科学 | 202篇 |
临床医学 | 1340篇 |
内科学 | 1782篇 |
皮肤病学 | 119篇 |
神经病学 | 926篇 |
特种医学 | 396篇 |
外科学 | 1168篇 |
综合类 | 157篇 |
现状与发展 | 1篇 |
一般理论 | 7篇 |
预防医学 | 1060篇 |
眼科学 | 137篇 |
药学 | 745篇 |
中国医学 | 51篇 |
肿瘤学 | 607篇 |
出版年
2023年 | 50篇 |
2022年 | 73篇 |
2021年 | 162篇 |
2020年 | 109篇 |
2019年 | 177篇 |
2018年 | 193篇 |
2017年 | 160篇 |
2016年 | 166篇 |
2015年 | 230篇 |
2014年 | 302篇 |
2013年 | 448篇 |
2012年 | 595篇 |
2011年 | 612篇 |
2010年 | 353篇 |
2009年 | 340篇 |
2008年 | 539篇 |
2007年 | 579篇 |
2006年 | 596篇 |
2005年 | 627篇 |
2004年 | 639篇 |
2003年 | 590篇 |
2002年 | 485篇 |
2001年 | 166篇 |
2000年 | 139篇 |
1999年 | 154篇 |
1998年 | 118篇 |
1997年 | 105篇 |
1996年 | 94篇 |
1995年 | 99篇 |
1994年 | 87篇 |
1993年 | 75篇 |
1992年 | 111篇 |
1991年 | 111篇 |
1990年 | 97篇 |
1989年 | 96篇 |
1988年 | 88篇 |
1987年 | 87篇 |
1986年 | 77篇 |
1985年 | 85篇 |
1984年 | 81篇 |
1983年 | 67篇 |
1982年 | 64篇 |
1981年 | 65篇 |
1980年 | 61篇 |
1979年 | 47篇 |
1978年 | 42篇 |
1977年 | 46篇 |
1976年 | 61篇 |
1974年 | 49篇 |
1973年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
73.
74.
Dale P. Nabb PhD Florence Whitfield BS 《Archives of environmental & occupational health》2013,68(2):147-154
Public concern exists about the potential for reproductive damage that may result from exposures to environmental contaminants. Therefore, the authors sought to determine if there was an association between a child's congenital malformation or a child's lowered weight at birth and his or her mother's residence in a census tract where a site of environmental contamination had been documented. Exposure designations were derived from existing sources of information. Except for an elevated risk (odds ratio = 1.5) for infants with malformations of the heart and circulatory system, this investigation did not reveal increased risks for most malformations or for lowered birthweight among babies born to women who lived in these census tracts. Methodologic issues inherent to investigations that rely on existing data sources are discussed. 相似文献
75.
76.
77.
Wayne K. Davis Peter A. J. Bouhuijs W. Dale Dauphinee Pauline A. McAvoy David A. Alexander Colin Coles 《Teaching and learning in medicine》2013,25(3):130-138
This article examines the research evidence supporting relationships between both personal and social factors and the career choices of physicians in training. Although the research literature in this area is limited by a lack of longitudinal studies, a dependence on cross‐sectional designs, and a lack of multivariate investigations, data support relationships in each of the following areas: sociodemographic characteristics of student, student personality and attitudinal variables, institutional characteristics of the medical school, characteristics of the specialty training programs, and information available to students about the various careers. Additionally, this review investigates the stability of career preferences and career choices over time. 相似文献
78.
79.
Dale G. Larson 《Journal of pain & palliative care pharmacotherapy》2013,27(2):41-55
Although hospice staff support groups are frequently cited as a valuable resource in coping with hospice work stress, few guidelines exist for implementing a successful group experience. This article summarizes a pilot study of a 12-week audiotape staff support group training program for hospice and oncology workers developed collaboratively by the author and the UCLA California Self-Help Center. Two West Coast hospice groups participated in the study. Group members reported a high degree of satisfaction with the tape program and their group experience. Burnout scores were not significantly affected by the group experience. Preliminary data on coping strategies, implications for the development and strengthening social support networks in the hospice, and suggestions for future research efforts are discussed. 相似文献