全文获取类型
收费全文 | 162438篇 |
免费 | 32991篇 |
国内免费 | 2477篇 |
专业分类
耳鼻咽喉 | 5290篇 |
儿科学 | 5541篇 |
妇产科学 | 2479篇 |
基础医学 | 4647篇 |
口腔科学 | 1905篇 |
临床医学 | 27549篇 |
内科学 | 50195篇 |
皮肤病学 | 7818篇 |
神经病学 | 15653篇 |
特种医学 | 6945篇 |
外科学 | 43330篇 |
综合类 | 325篇 |
现状与发展 | 72篇 |
一般理论 | 1篇 |
预防医学 | 7384篇 |
眼科学 | 3594篇 |
药学 | 1979篇 |
中国医学 | 61篇 |
肿瘤学 | 13138篇 |
出版年
2024年 | 693篇 |
2023年 | 4841篇 |
2022年 | 1330篇 |
2021年 | 3314篇 |
2020年 | 6135篇 |
2019年 | 2315篇 |
2018年 | 7604篇 |
2017年 | 7491篇 |
2016年 | 8635篇 |
2015年 | 8658篇 |
2014年 | 15751篇 |
2013年 | 15976篇 |
2012年 | 6102篇 |
2011年 | 6229篇 |
2010年 | 10786篇 |
2009年 | 14551篇 |
2008年 | 6365篇 |
2007年 | 4652篇 |
2006年 | 7115篇 |
2005年 | 4430篇 |
2004年 | 3678篇 |
2003年 | 2662篇 |
2002年 | 2740篇 |
2001年 | 4117篇 |
2000年 | 3353篇 |
1999年 | 3560篇 |
1998年 | 3849篇 |
1997年 | 3609篇 |
1996年 | 3506篇 |
1995年 | 3334篇 |
1994年 | 2064篇 |
1993年 | 1669篇 |
1992年 | 1628篇 |
1991年 | 1638篇 |
1990年 | 1288篇 |
1989年 | 1410篇 |
1988年 | 1195篇 |
1987年 | 1059篇 |
1986年 | 1051篇 |
1985年 | 877篇 |
1984年 | 667篇 |
1983年 | 611篇 |
1982年 | 565篇 |
1981年 | 466篇 |
1980年 | 405篇 |
1979年 | 410篇 |
1978年 | 388篇 |
1977年 | 459篇 |
1975年 | 312篇 |
1972年 | 345篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
Darren R. Feldman MD Yasser Ged MBBS Chung-Han Lee PhD Andrea Knezevic MS Ana M. Molina MD Ying-Bei Chen PhD Joshua Chaim DO Devyn T. Coskey MS Samuel Murray MS Satish K. Tickoo MD Victor E. Reuter MD Sujata Patil PhD Han Xiao MD Jahan Aghalar MD Arlyn J. Apollo MD Maria I. Carlo MD Robert J. Motzer MD Martin H. Voss MD 《Cancer》2020,126(24):5247-5255
82.
James I. Geller MD Joseph G. Pressey MD Malcolm A. Smith MD Rachel A. Kudgus PhD Mariana Cajaiba MD Joel M. Reid PhD David Hall PhD Donald A. Barkauskas PhD Stephen D. Voss MD Steve Y. Cho MD Stacey L. Berg MD Jeffrey S. Dome MD PhD Elizabeth Fox MD Brenda J. Weigel MD 《Cancer》2020,126(24):5303-5310
83.
84.
85.
86.
Juliette A. Loncaster MD FRCR Ernest Allan 《Photodiagnosis and Photodynamic Therapy》2006,3(2):134-137
Gorlin syndrome (naevoid basal cell carcinoma syndrome) is a genetically linked disorder characterized by the development of multiple basal cell carcinomas (BCCs) throughout life. Cumulative surgery, cryotherapy and other conventional interventions can result in significant disfigurement by middle age. Radiotherapy is contra-indicated because the mutated gene underlying the syndrome, ‘PTCH’, increases sensitivity to ionising radiation, so there is significant likelihood of inducing further tumours in and around the irradiated area. Photodynamic therapy offers a non-invasive treatment option for patients with this condition, with the added advantage of causing minimal scarring. 相似文献
87.
88.
89.
90.
Eijiro Morita Torao Tanaka Tetsuya Nakamura Fumitaka Terabe Ichiro Hirata Kenichi Katsu Masakazu Takazoe Akira Terano 《Digestive endoscopy》2006,18(4):263-268
Background and Aims: Video capsule endoscopy (VCE) has become increasingly important as a simple method for observing the entire small intestine. The indications for VCE are obscure gastrointestinal bleeding and investigation of Crohn’s disease (CD). However, the correlation between endoscopic findings obtained by VCE and clinical findings in known cases of CD is not clear, and we therefore investigated this in the present study. Patients and methods: In 30 patients with known CD (Crohn’s disease activity index [CDAI] 0–420; median = 158.3), double contrast enteroclysis (ENT) was performed 1–3 weeks prior to VCE. The relationship between the VCE findings and hematological analysis/CDAI was examined. Results: In 17 of 30 patients, the entire small intestine could be investigated by VCE, whereas in the remaining 13 patients the terminal ileum could not be investigated. The following exhibited positive correlations: total lesions and CDAI (correlation coefficient values: rs = 0.661, adjusted P < 0.0061), ulcers and C‐reactive protein (CRP) (rs = 0.607, adjusted P < 0.0061), total lesions and CRP (rs = 0.604, adjusted P < 0.0061). Conclusions: Analysis with VCE suggests that CDAI and CRP indicate the activity of intestinal lesions in patients with known CD, and that CRP, in particular, is associated with the activity of ulcerative lesions of the intestine. This may contribute to revised guidelines for VCE in the future. 相似文献