全文获取类型
收费全文 | 28881篇 |
免费 | 5717篇 |
国内免费 | 86篇 |
专业分类
耳鼻咽喉 | 120篇 |
儿科学 | 839篇 |
妇产科学 | 1837篇 |
基础医学 | 1526篇 |
口腔科学 | 196篇 |
临床医学 | 16854篇 |
内科学 | 3963篇 |
皮肤病学 | 124篇 |
神经病学 | 1468篇 |
特种医学 | 335篇 |
外科学 | 1819篇 |
综合类 | 154篇 |
一般理论 | 29篇 |
预防医学 | 2935篇 |
眼科学 | 225篇 |
药学 | 751篇 |
中国医学 | 22篇 |
肿瘤学 | 1487篇 |
出版年
2024年 | 64篇 |
2023年 | 862篇 |
2022年 | 147篇 |
2021年 | 454篇 |
2020年 | 802篇 |
2019年 | 473篇 |
2018年 | 1340篇 |
2017年 | 1543篇 |
2016年 | 1640篇 |
2015年 | 1702篇 |
2014年 | 1831篇 |
2013年 | 2254篇 |
2012年 | 1224篇 |
2011年 | 1499篇 |
2010年 | 1471篇 |
2009年 | 1720篇 |
2008年 | 1357篇 |
2007年 | 1294篇 |
2006年 | 1288篇 |
2005年 | 1130篇 |
2004年 | 1022篇 |
2003年 | 898篇 |
2002年 | 851篇 |
2001年 | 536篇 |
2000年 | 312篇 |
1999年 | 503篇 |
1998年 | 689篇 |
1997年 | 768篇 |
1996年 | 725篇 |
1995年 | 650篇 |
1994年 | 463篇 |
1993年 | 385篇 |
1992年 | 280篇 |
1991年 | 277篇 |
1990年 | 264篇 |
1989年 | 203篇 |
1988年 | 172篇 |
1987年 | 155篇 |
1986年 | 147篇 |
1985年 | 168篇 |
1984年 | 125篇 |
1983年 | 119篇 |
1982年 | 98篇 |
1981年 | 111篇 |
1980年 | 76篇 |
1979年 | 91篇 |
1978年 | 71篇 |
1977年 | 73篇 |
1976年 | 75篇 |
1972年 | 89篇 |
排序方式: 共有10000条查询结果,搜索用时 281 毫秒
61.
62.
63.
Sebastian Bonner Thomas Matte Mitchell Rubin Joanne K Fagan Jennifer Ahern David Evans 《The Journal of asthma》2006,43(1):31-35
Although studies have documented underuse of controller medications and overuse of short-acting inhaled ss(2)-agonist among children with persistent asthma in disadvantaged communities, the persistence of oral ss(2)-agonist use in pediatric practice has not been studied since inhaled short-acting ss(2)-agonists became widespread. We describe medications used to treat asthma among children 3 to 5 years of age at 10 Head Start and other subsidized preschool centers in East and Central Harlem, New York City. We interviewed 149 parents/guardians of children who were identified as having probable asthma based on physician's diagnosis, persistent symptoms, hospitalization, and medication use. We classified 86 of the 149 children (58%) as having current persistent asthma. Only 15 of them (17%) were reported to have used controller medications at least 5 days/week in the last 4 weeks-only 2 of whom used inhaled corticosteroids. By contrast, 53 children (62%) used oral ss(2)-agonist in the last 4 weeks, often (72%) in conjunction with nebulized or inhaled short-acting ss(2)-agonist. Use of oral ss(2)-agonist was associated with more severe symptoms. This study documents the continued widespread use of oral ss(2)-agonist for treatment of children in a low-income community with high prevalence of asthma. 相似文献
64.
65.
66.
67.
68.
69.
70.
The patient with an implantable cardioverter defibrillator 总被引:1,自引:0,他引:1
Electrophysiologic technology developed over the past 20 years has improved the life expectancy of patients who have survived sudden cardiac death events. Use of an implantable cardioverter defibrillator (ICD) continues to increase as more indications for the device are researched. Patients with ICDs will be cared for in the postanesthesia care unit following cardiac and noncardiac surgery and require PACU nurses to be knowledgeable about this advanced and changing technology as well as provide for emotional and psychological needs. 相似文献