全文获取类型
收费全文 | 152503篇 |
免费 | 9650篇 |
国内免费 | 990篇 |
专业分类
耳鼻咽喉 | 1895篇 |
儿科学 | 4276篇 |
妇产科学 | 3206篇 |
基础医学 | 19589篇 |
口腔科学 | 3389篇 |
临床医学 | 13708篇 |
内科学 | 32883篇 |
皮肤病学 | 2990篇 |
神经病学 | 14658篇 |
特种医学 | 5487篇 |
外国民族医学 | 23篇 |
外科学 | 23108篇 |
综合类 | 2278篇 |
一般理论 | 117篇 |
预防医学 | 9760篇 |
眼科学 | 2737篇 |
药学 | 11191篇 |
6篇 | |
中国医学 | 567篇 |
肿瘤学 | 11275篇 |
出版年
2023年 | 668篇 |
2022年 | 1403篇 |
2021年 | 2811篇 |
2020年 | 1769篇 |
2019年 | 2722篇 |
2018年 | 3323篇 |
2017年 | 2549篇 |
2016年 | 2752篇 |
2015年 | 3161篇 |
2014年 | 4313篇 |
2013年 | 6225篇 |
2012年 | 8957篇 |
2011年 | 9558篇 |
2010年 | 5731篇 |
2009年 | 5151篇 |
2008年 | 8448篇 |
2007年 | 8813篇 |
2006年 | 8551篇 |
2005年 | 8371篇 |
2004年 | 8470篇 |
2003年 | 8147篇 |
2002年 | 7949篇 |
2001年 | 4115篇 |
2000年 | 4016篇 |
1999年 | 3471篇 |
1998年 | 1833篇 |
1997年 | 1456篇 |
1996年 | 1328篇 |
1995年 | 1287篇 |
1994年 | 1099篇 |
1993年 | 1018篇 |
1992年 | 2056篇 |
1991年 | 1973篇 |
1990年 | 1697篇 |
1989年 | 1596篇 |
1988年 | 1528篇 |
1987年 | 1348篇 |
1986年 | 1342篇 |
1985年 | 1216篇 |
1984年 | 974篇 |
1983年 | 924篇 |
1982年 | 765篇 |
1981年 | 673篇 |
1980年 | 575篇 |
1979年 | 661篇 |
1978年 | 543篇 |
1977年 | 481篇 |
1975年 | 477篇 |
1974年 | 532篇 |
1973年 | 513篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
Although hepatitis E virus (HEV) is the primary cause of enterically transmitted acute hepatitis and jaundice in developing countries, locally acquired HEV infections are increasing in nonendemic countries. As such, HEV is emerging as an underdiagnosed cause of infection. This report describes three clinically variable cases of HEV infection with unusual clinical presentations. These cases highlight the fact that HEV should be considered in the differential diagnosis of patients with unexplained hepatitis (acute or chronic) with or without extrahepatic manifestations. HEV should also be considered in patients with persistently elevated liver enzymes who have not travelled to known HEV-endemic regions. Lack of knowledge among physicians and an absence of standardized diagnostic tests may result in increased morbidity and mortality from HEV infection. 相似文献
32.
Femoral access‐related complications during percutaneous transcatheter aortic valve implantation comparing single versus double Prostar XL device closure 下载免费PDF全文
33.
34.
35.
We report a case of dichorionic, diamniotic twins who developed similar erythematous, annular, erosive plaques in the inguinal folds in the first few weeks of life that were refractory to topical antifungals and oral antibiotics. The twins were found to have high transaminase levels, antinuclear antibody positivity, and anti‐SSS/Ro) and anti‐SSB/La autoantibodies. The rash resolved without scarring by 7 months of age with the use of low‐potency topical corticosteroids. We suggest that physicians consider neonatal lupus erythematosus in neonates with atypical eruptions occurring in sun‐protected skin. 相似文献
36.
37.
38.
Miguel A. Sanz Pau Montesinos Haesook T. Kim Guillermo J. Ruiz-Argüelles María S. Undurraga María R. Uriarte Lem Martínez Rafael H. Jacomo Homero Gutiérrez-Aguirre Raul A. M. Melo Rosane Bittencourt Ricardo Pasquini Katia Pagnano Evandro M. Fagundes Edo Vellenga Alexandra Holowiecka Ana J. González-Huerta Pascual Fernández Javier De la Serna Salut Brunet Elena De Lisa José González-Campos José M. Ribera Isabel Krsnik Arnold Ganser Nancy Berliner Raul C. Ribeiro Francesco Lo-Coco Bob L?wenberg Eduardo M. Rego 《Annals of hematology》2015,94(8):1347-1356
39.
Alessandro De Cassai Tommaso Tonetti Helmut Galligioni Carlo Ori 《Brazilian Journal of Anesthesiology》2019,69(1):95-98
Background and objective
Erector spinae plane block is a valid technique to provide simultaneously analgesia for combined thoracic and abdominal surgery.Case report
A patient underwent open esophagectomy followed by reconstructive esophagogastroplasty but refused thoracic epidural analgesia; a multi‐modal analgesia with a multiple erector spinae plane block was then planned. Three erector spinae plane catheters (T5 and T10 on the right side and T9 on the left side) for continuous analgesia were placed before surgery. During the first 48 h pain was never reported in the thoracic area but the patient reported multiple times to feel a pain well localized in epigastrium, but never localized in any other abdominal quadrant.Discussion
Erector spinae plane block is a valid technique to provide analgesia simultaneously for combined thoracic and abdominal surgery and could be a valid alternative strategy if the use of epidural analgesia is contraindicated. 相似文献40.