全文获取类型
收费全文 | 2622篇 |
免费 | 191篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 16篇 |
儿科学 | 96篇 |
妇产科学 | 53篇 |
基础医学 | 432篇 |
口腔科学 | 31篇 |
临床医学 | 384篇 |
内科学 | 492篇 |
皮肤病学 | 22篇 |
神经病学 | 239篇 |
特种医学 | 106篇 |
外科学 | 208篇 |
综合类 | 37篇 |
一般理论 | 6篇 |
预防医学 | 275篇 |
眼科学 | 33篇 |
药学 | 201篇 |
中国医学 | 2篇 |
肿瘤学 | 185篇 |
出版年
2023年 | 20篇 |
2022年 | 21篇 |
2021年 | 59篇 |
2020年 | 27篇 |
2019年 | 50篇 |
2018年 | 59篇 |
2017年 | 51篇 |
2016年 | 48篇 |
2015年 | 68篇 |
2014年 | 61篇 |
2013年 | 115篇 |
2012年 | 190篇 |
2011年 | 213篇 |
2010年 | 131篇 |
2009年 | 95篇 |
2008年 | 172篇 |
2007年 | 200篇 |
2006年 | 166篇 |
2005年 | 168篇 |
2004年 | 168篇 |
2003年 | 140篇 |
2002年 | 146篇 |
2001年 | 24篇 |
2000年 | 21篇 |
1999年 | 16篇 |
1998年 | 26篇 |
1997年 | 22篇 |
1996年 | 20篇 |
1995年 | 16篇 |
1994年 | 14篇 |
1993年 | 20篇 |
1992年 | 11篇 |
1991年 | 10篇 |
1989年 | 12篇 |
1988年 | 10篇 |
1986年 | 10篇 |
1985年 | 16篇 |
1984年 | 8篇 |
1983年 | 9篇 |
1982年 | 13篇 |
1981年 | 11篇 |
1980年 | 19篇 |
1979年 | 12篇 |
1978年 | 12篇 |
1977年 | 7篇 |
1976年 | 9篇 |
1973年 | 8篇 |
1972年 | 14篇 |
1964年 | 8篇 |
1962年 | 9篇 |
排序方式: 共有2818条查询结果,搜索用时 0 毫秒
1.
2.
Chouraqui Jean-Pierre Tavoularis Gabriel Simeoni Umberto Ferry Constance Turck Dominique 《European journal of nutrition》2020,59(1):67-80
European Journal of Nutrition - The French Nutri-Bébé 2013 study aimed to assess the nutritional intake of infants and young children in comparison with the recommendations of the 2013... 相似文献
3.
4.
Of 431 patients with gastric cancer observed in our institution, 23 (5.3%) had early gastric cancer (EGC). Macroscopic presentation, histology, depth of invasion, and lymph node involvement were evaluated in all the cases. All patients underwent surgery and an intensive follow-up was performed. Five of the 23 patients progressed, and the risk factors were examined. Histology seemed to be the main prognostic factor in our study, since intestinal type of EGC was associated to a significantly better prognosis. Total gastrectomy is indicated in the proximal localization of EGC, and should perhaps be performed also in cases presenting undifferentiated histology. 相似文献
5.
6.
7.
8.
9.
10.
Robert Estes Daniel Estes Constance West Jitka Zobal-Ratner Patrick Droster John Simon 《Journal of AAPOS》2007,11(4):325-329
PURPOSE: To describe data sources and functional utility of the American Association for Pediatric Ophthalmology and Strabismus (AAPOS) workforce database and associated map files. METHODS: Population data from the 2000 U.S. Census and current listings from the AAPOS and American Academy of Ophthalmology (AAO) databases were organized to demonstrate and analyze practitioner-to-population relationships for metropolitan statistical areas nationwide. An interactive map was developed to provide an intuitive graphical display of the data. RESULTS: A total of 749 active AAPOS members were distributed in 154 of 280 defined metropolitan statistical areas. Within these areas, a 0- to 20-year age subgroup varied from 17.8% to 42.6%, with an average of 30.4%. The AAPOS member-to-million-person ratio varied from 1.3 to 27, with higher numbers generally representing regions with population bases inadequately defined by Census Bureau statistical area definitions. Ratios for a majority of larger, better-defined areas ranged from 3 to 4 AAPOS members per million persons. Sizable areas with no AAPOS member presence were identified and tabulated. AAO members with a specified pediatric practice focus who were not AAPOS members were identified in 103 areas, possibly influencing patient choices and practitioner referrals for these regions. CONCLUSIONS: The AAPOS workforce database and related interactive map display practitioner and population data that may assist physicians and planners in targeting practice development and identifying potentially underserved areas. 相似文献