全文获取类型
收费全文 | 15265篇 |
免费 | 1130篇 |
国内免费 | 41篇 |
专业分类
耳鼻咽喉 | 184篇 |
儿科学 | 355篇 |
妇产科学 | 187篇 |
基础医学 | 1807篇 |
口腔科学 | 155篇 |
临床医学 | 1748篇 |
内科学 | 3589篇 |
皮肤病学 | 214篇 |
神经病学 | 1324篇 |
特种医学 | 515篇 |
外科学 | 2915篇 |
综合类 | 186篇 |
一般理论 | 16篇 |
预防医学 | 1087篇 |
眼科学 | 311篇 |
药学 | 905篇 |
中国医学 | 17篇 |
肿瘤学 | 921篇 |
出版年
2024年 | 23篇 |
2023年 | 190篇 |
2022年 | 382篇 |
2021年 | 809篇 |
2020年 | 401篇 |
2019年 | 616篇 |
2018年 | 721篇 |
2017年 | 457篇 |
2016年 | 498篇 |
2015年 | 569篇 |
2014年 | 796篇 |
2013年 | 862篇 |
2012年 | 1385篇 |
2011年 | 1376篇 |
2010年 | 716篇 |
2009年 | 586篇 |
2008年 | 991篇 |
2007年 | 916篇 |
2006年 | 800篇 |
2005年 | 677篇 |
2004年 | 597篇 |
2003年 | 519篇 |
2002年 | 416篇 |
2001年 | 89篇 |
2000年 | 92篇 |
1999年 | 78篇 |
1998年 | 60篇 |
1997年 | 45篇 |
1996年 | 41篇 |
1995年 | 30篇 |
1994年 | 24篇 |
1993年 | 30篇 |
1992年 | 49篇 |
1991年 | 41篇 |
1990年 | 43篇 |
1989年 | 50篇 |
1988年 | 38篇 |
1987年 | 36篇 |
1986年 | 35篇 |
1985年 | 35篇 |
1984年 | 28篇 |
1983年 | 19篇 |
1982年 | 28篇 |
1981年 | 22篇 |
1980年 | 18篇 |
1979年 | 30篇 |
1978年 | 22篇 |
1976年 | 20篇 |
1974年 | 12篇 |
1973年 | 15篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
152.
153.
154.
Objective. To evaluate inhalation device cleaning practices of children with asthma and its effect on their asthma morbidity. Methods. A survey of patients aged 4 to 18 years admitted to an urban pediatric emergency department (ED) with an acute asthma exacerbation. Questions included demographics, asthma history, preference of delivery devices, and frequency of device cleaning. Patients were followed until their disposition from the ED, or until the end of their hospitalization, if admitted. Results. 220 subjects completed the survey. Mean age was 9.2 (± 3.9) years-old. One hundred and four (47.3%) patients used both nebulizers and spacer devices, while 18 (8.1%) used spacers only and 98 (44.5%) used nebulizers alone. Seventy-seven (38.1%; 95%CI: 31.7%–45.0%) patients cleaned their nebulizers and 57 (46.7%; 95%CI: 38.1%–55.4%) cleaned their spacer devices after each use as recommended by the Centers for Disease Control. There were no detectable differences in visit admission rate, total number of previous admissions, number of asthma exacerbations per year, and number of ED visits in one year between users who cleaned their devices after every, or every other use, compared to those who cleaned their devices less frequently. Conclusion. Although the majority of patients did not follow accepted guidelines for inhalation device cleaning, further studies are necessary to correlate cleaning practices to patients' clinical outcome. 相似文献
155.
Emily A. Rauscher Stephanie L. Young Wesley T. Durham Joshua B. Barbour 《Health communication》2017,32(5):550-559
This study investigates how young women of egg-donating age perceive egg donation. Using institutional theory, this study demonstrates how participants frame a health care decision, such as egg donation, utilizing familial ideals. Results revealed that women expressed the importance of ownership over their genetic material and that familial ideals encourage an ideal way to create a family, which egg donation only fits as a last resort. Results show that familial ideals reach past the institution of family into broader decision making, such as that of health care. Further, results show that as more families are constructed through assisted reproductive technologies, attempts should be made to gradually alter the familial ideal to encompass novel medical technologies such as egg donation. 相似文献
156.
Sarah DeLozier Peter Speltz Jason Brito Leigh Anne Tang Janey Wang Joshua C Smith Dario Giuse Elizabeth Phillips Kristina Williams Teresa Strickland Giovanni Davogustto Dan Roden Joshua C Denny 《J Am Med Inform Assoc》2021,28(1):126
Identifying acute events as they occur is challenging in large hospital systems. Here, we describe an automated method to detect 2 rare adverse drug events (ADEs), drug-induced torsades de pointes and Stevens-Johnson syndrome and toxic epidermal necrolysis, in near real time for participant recruitment into prospective clinical studies. A text processing system searched clinical notes from the electronic health record (EHR) for relevant keywords and alerted study personnel via email of potential patients for chart review or in-person evaluation. Between 2016 and 2018, the automated recruitment system resulted in capture of 138 true cases of drug-induced rare events, improving recall from 43% to 93%. Our focused electronic alert system maintained 2-year enrollment, including across an EHR migration from a bespoke system to Epic. Real-time monitoring of EHR notes may accelerate research for certain conditions less amenable to conventional study recruitment paradigms. 相似文献
157.
158.
159.
160.