全文获取类型
收费全文 | 2255篇 |
免费 | 357篇 |
国内免费 | 39篇 |
专业分类
耳鼻咽喉 | 15篇 |
儿科学 | 176篇 |
妇产科学 | 30篇 |
基础医学 | 136篇 |
口腔科学 | 29篇 |
临床医学 | 359篇 |
内科学 | 659篇 |
皮肤病学 | 65篇 |
神经病学 | 231篇 |
特种医学 | 280篇 |
外科学 | 288篇 |
综合类 | 65篇 |
预防医学 | 121篇 |
眼科学 | 18篇 |
药学 | 108篇 |
中国医学 | 1篇 |
肿瘤学 | 70篇 |
出版年
2023年 | 53篇 |
2022年 | 12篇 |
2021年 | 37篇 |
2020年 | 98篇 |
2019年 | 22篇 |
2018年 | 98篇 |
2017年 | 74篇 |
2016年 | 74篇 |
2015年 | 66篇 |
2014年 | 105篇 |
2013年 | 119篇 |
2012年 | 65篇 |
2011年 | 56篇 |
2010年 | 90篇 |
2009年 | 130篇 |
2008年 | 78篇 |
2007年 | 78篇 |
2006年 | 72篇 |
2005年 | 54篇 |
2004年 | 39篇 |
2003年 | 29篇 |
2002年 | 36篇 |
2001年 | 41篇 |
2000年 | 32篇 |
1999年 | 49篇 |
1998年 | 94篇 |
1997年 | 102篇 |
1996年 | 83篇 |
1995年 | 72篇 |
1994年 | 51篇 |
1993年 | 57篇 |
1992年 | 35篇 |
1991年 | 25篇 |
1990年 | 35篇 |
1989年 | 62篇 |
1988年 | 52篇 |
1987年 | 39篇 |
1986年 | 40篇 |
1985年 | 43篇 |
1984年 | 28篇 |
1983年 | 24篇 |
1982年 | 22篇 |
1981年 | 18篇 |
1980年 | 15篇 |
1979年 | 16篇 |
1978年 | 12篇 |
1977年 | 11篇 |
1976年 | 10篇 |
1974年 | 10篇 |
1971年 | 10篇 |
排序方式: 共有2651条查询结果,搜索用时 15 毫秒
1.
2.
Albert De Decker Rosalie Fergusson Benjamin Ondruschka Niels Hammer Johann Zwirner 《Clinical anatomy (New York, N.Y.)》2020,33(4):522-529
For 50 years now, sacrospinous ligament fixation (SSLF) has been used to treat pelvic organ prolapse consequent on altered integrity of the pelvic myofascial structures. It is usually performed vaginally, but it has recently been performed laparoscopically through either an anterior or a posterior approach, with the broad ligament as a landmark to differentiate the two. In the present study, these two laparoscopic approaches were assessed using Thiel-embalmed cadavers. The anterior and posterior approaches were compared in terms of the closest distance to anatomical structures at risk, including pelvic viscera, the obturator nerve, and vascular structures. The posterior approach was more often closer to the investigated vessels and the rectum. The obturator nerve and the ureter were close to both the anterior and posterior approaches. The urinary bladder was closer using the anterior approach. From an anatomical standpoint, therefore, the anterior laparoscopic approach for SSLF is more likely to cause injury to the urinary bladder, whereas the posterior approach is more prone to causing rectal and vessel injuries. This study illustrates, from a basic science perspective, the importance of combining fascia research, novel endoscopic or minimally invasive surgical exposures informed by anatomy, and contemporary trends in gynecology in order to improve patient outcomes. Clin. Anat. 33:522–529, 2020. © 2019 Wiley Periodicals, Inc. 相似文献
3.
4.
5.
6.
Sixty children aged 5-13 years with moderately severe asthma took part in a double-blind, placebo-controlled trial of ketotifen. The design incorporated a 22 week study period, the addition of ketotifen or placebo to the current medication, and a controlled withdrawal of the regular therapy. Children receiving ketotifen showed significantly lower mean numbers of asthma attacks and less absence from school. The addition of ketotifen to existing treatment was associated with marginally significant changes in rates of day and night wheezing. In the second phase of study, additional therapy was withdrawn from both the ketotifen and placebo groups which resulted in a high (percentage) withdrawal. Children receiving ketotifen did not have a significantly lower failure rate than those given placebo. 相似文献
7.
8.
9.
The relationship between panic attacks and chemical dependencies 总被引:1,自引:0,他引:1
The purposes of the present study were to (a) determine the prevalence and characteristics of panic attacks in an alcohol/drug abuse inpatient population, (b) compare patients who reported experiencing panic attacks to patients who have never experienced a panic attack on various self-report measures of psychopathology and on ratings completed by Caregivers, and (c) to examine differences within groups of panickers. One hundred forty-four patients completed the questionnaires over a 17 week period. Over 50% of the patients reported experiencing one or more attacks in the three weeks prior to testing. These panickers scored higher than non-panickers on various measures of psychopathology. Over 83% of panickers reported using alcohol to self-medicate their panic attacks with almost 72% of them believing this procedure to be effective for preventing or reducing panic attacks. Male panickers differed from female panickers on several measures as did panickers who reported their panic attacks began before the alcohol abuse compared to those who did not believe this. The mean history of panic attacks was 103.4 months while the mean history of alcohol abuse was 134.6 months. 相似文献
10.