全文获取类型
收费全文 | 76871篇 |
免费 | 5848篇 |
国内免费 | 1279篇 |
专业分类
耳鼻咽喉 | 547篇 |
儿科学 | 2475篇 |
妇产科学 | 690篇 |
基础医学 | 7419篇 |
口腔科学 | 1393篇 |
临床医学 | 7021篇 |
内科学 | 6924篇 |
皮肤病学 | 1054篇 |
神经病学 | 16495篇 |
特种医学 | 1348篇 |
外国民族医学 | 5篇 |
外科学 | 4537篇 |
综合类 | 9152篇 |
现状与发展 | 5篇 |
一般理论 | 1篇 |
预防医学 | 6823篇 |
眼科学 | 493篇 |
药学 | 10337篇 |
10篇 | |
中国医学 | 3569篇 |
肿瘤学 | 3700篇 |
出版年
2024年 | 143篇 |
2023年 | 1148篇 |
2022年 | 1599篇 |
2021年 | 2888篇 |
2020年 | 2381篇 |
2019年 | 4816篇 |
2018年 | 4287篇 |
2017年 | 3134篇 |
2016年 | 2567篇 |
2015年 | 2654篇 |
2014年 | 5068篇 |
2013年 | 5636篇 |
2012年 | 3910篇 |
2011年 | 4449篇 |
2010年 | 3878篇 |
2009年 | 4364篇 |
2008年 | 3556篇 |
2007年 | 4274篇 |
2006年 | 3679篇 |
2005年 | 2973篇 |
2004年 | 1820篇 |
2003年 | 1855篇 |
2002年 | 1547篇 |
2001年 | 1196篇 |
2000年 | 1012篇 |
1999年 | 820篇 |
1998年 | 844篇 |
1997年 | 695篇 |
1996年 | 605篇 |
1995年 | 534篇 |
1994年 | 464篇 |
1993年 | 370篇 |
1992年 | 370篇 |
1991年 | 346篇 |
1990年 | 269篇 |
1989年 | 258篇 |
1988年 | 213篇 |
1987年 | 227篇 |
1986年 | 181篇 |
1985年 | 491篇 |
1984年 | 513篇 |
1983年 | 356篇 |
1982年 | 364篇 |
1981年 | 271篇 |
1980年 | 272篇 |
1979年 | 179篇 |
1978年 | 104篇 |
1977年 | 104篇 |
1976年 | 90篇 |
1974年 | 77篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
C. Knipfer F. Wagner K. Knipfer G. Millesi J. Acero J.A. Hueto E. Nkenke 《International journal of oral and maxillofacial surgery》2019,48(6):841-846
The aim of this study was to evaluate learners’ acceptance of a webinar for continuing medical education that was instigated by the International Association of Oral and Maxillofacial Surgeons (IAOMS). A live, interactive webinar on orthognathic surgery was broadcast via the Internet. The learners’ acceptance of the webinar was evaluated using a standardized, validated questionnaire (Student Evaluation of Educational Quality, SEEQ). One hundred and fifty-three participants attended the webinar; 55 participants (46 male, nine female) completed the questionnaire. The mean age of the respondents was 41.6 ± 10.0 years. The age of male and female respondents did not differ significantly. The respondents were spread over five continents, with the highest number from Brazil. The SEEQ showed a high level of acceptance for almost all subscales. There was no statistically significant difference between male and female respondents concerning acceptance of the webinar (P = 0.614). The wide distribution of participants shows the potential for webinars as facilitators of barrier-free distribution of knowledge. The webinar was well accepted by the attendees independent of sex, specialty, and work experience. However, the sex ratio reflects the underrepresentation of women in oral and maxillofacial surgery. 相似文献
105.
Kimberly B. Glazer Kendrin R. Sonneville Nadia Micali Sonja A. Swanson Ross Crosby Nicholas J. Horton Kamryn T. Eddy Alison E. Field 《The Journal of adolescent health》2019,64(2):165-171
Purpose
To quantify eating disorder (ED) stability and diagnostic transition among a community-based sample of adolescents and young adult females in the United States.Methods
Using 11 prospective assessments from 9,031 U.S. females ages 9–15 years at baseline of the Growing Up Today Study, we classified cases of the following EDs involving bingeing and purging: bulimia nervosa (BN), binge ED, purging disorder (PD), and subthreshold variants defined by less frequent (monthly vs. weekly) bingeing and purging behaviors. We measured number of years symptomatic and probability of maintaining symptoms, crossing to another diagnosis, or resolving symptoms across consecutive surveys.Results
Study lifetime disorder prevalence was 2.1% for BN and roughly 6% each for binge ED and PD. Most cases reported symptoms during only one survey year. Twenty-six percent of cases crossed between diagnoses during follow-up. Among participants meeting full threshold diagnostic criteria, transition from BN was most prevalent, crossing most frequently from BN to PD (12.9% of BN cases). Within each disorder phenotype, 20%–40% of cases moved between subthreshold and full threshold criteria across consecutive surveys.Conclusions
Diagnostic crossover is not rare among adolescent and young adult females with an ED. Transition patterns from BN to PD add support for considering these classifications in the same diagnostic category of disorders that involve purging. The prevalence of crossover between monthly and weekly symptom frequency suggests that a continuum or staging approach may increase utility of ED classification for prognostic and therapeutic intervention. 相似文献106.
107.
Bernard–Soulier syndrome (BSS) is a rare autosomal recessively inherited bleeding disorder. Pregnancy in patients with BSS is characterized by ante‐, intra‐, or postpartum haemorrhage, which may be delayed and severe. There is no consensus in the management of BSS in pregnancy and so far only 16 pregnancies in nine patients have been described. We report a further three pregnancies in two women with the syndrome. We also outline our management of pregnant patients with BSS. 相似文献
108.
109.
110.
北京市50家综合医院门诊患者抑郁障碍的调查 总被引:11,自引:0,他引:11
目的 了解北京地区综合医院门诊患者抑郁障碍的患病率。方法 随机抽取50家各级综合医院为调查现场,由精神科护士用自制抑郁筛选量表调查各科门诊患者2877例,由精神科医师对筛选阳性和10%的筛选阴性者以美国精神障碍诊断与统计手册第4版(DSM—Ⅳ)为金标准做出诊断。结果 (1)符合DSM—Ⅳ重性抑郁发作者为73例,现患病率为2.54%。其中内、外科患者的患病率(分别为3.03%和3.12%)高于其他科(1.58%);而性别分布的差异无统计学意义。(2)抑郁障碍总的现患率、年患率和终生患病率分别为3.09%、3.65%和6.16%;其中,重性抑郁障碍分别为1.97%、2.53%和4.48%。(3)检出的73例重性抑郁发作患者中,仅10例(14%)因抑郁求助和接受医生提供的服务,并被正确识别。结论北京综合医院非心理科门诊患者抑郁障碍的现患率为3.09%;患者对抑郁问题而求助医生的比例低。 相似文献