全文获取类型
收费全文 | 416982篇 |
免费 | 23082篇 |
国内免费 | 964篇 |
专业分类
耳鼻咽喉 | 5317篇 |
儿科学 | 13571篇 |
妇产科学 | 8990篇 |
基础医学 | 58368篇 |
口腔科学 | 12476篇 |
临床医学 | 34121篇 |
内科学 | 90817篇 |
皮肤病学 | 10708篇 |
神经病学 | 37080篇 |
特种医学 | 12733篇 |
外国民族医学 | 128篇 |
外科学 | 51060篇 |
综合类 | 2893篇 |
现状与发展 | 1篇 |
一般理论 | 153篇 |
预防医学 | 40916篇 |
眼科学 | 8094篇 |
药学 | 27556篇 |
4篇 | |
中国医学 | 1423篇 |
肿瘤学 | 24619篇 |
出版年
2023年 | 2239篇 |
2022年 | 3257篇 |
2021年 | 7774篇 |
2020年 | 4913篇 |
2019年 | 7900篇 |
2018年 | 12374篇 |
2017年 | 8710篇 |
2016年 | 8568篇 |
2015年 | 9660篇 |
2014年 | 11769篇 |
2013年 | 17003篇 |
2012年 | 27363篇 |
2011年 | 27739篇 |
2010年 | 14303篇 |
2009年 | 11799篇 |
2008年 | 22836篇 |
2007年 | 24560篇 |
2006年 | 22837篇 |
2005年 | 23008篇 |
2004年 | 21641篇 |
2003年 | 19822篇 |
2002年 | 17379篇 |
2001年 | 11048篇 |
2000年 | 11045篇 |
1999年 | 9865篇 |
1998年 | 2773篇 |
1997年 | 2331篇 |
1996年 | 2208篇 |
1995年 | 1917篇 |
1994年 | 1786篇 |
1993年 | 1690篇 |
1992年 | 5894篇 |
1991年 | 5449篇 |
1990年 | 5080篇 |
1989年 | 4819篇 |
1988年 | 4528篇 |
1987年 | 4126篇 |
1986年 | 3933篇 |
1985年 | 3618篇 |
1984年 | 2691篇 |
1983年 | 2232篇 |
1979年 | 2168篇 |
1978年 | 1489篇 |
1975年 | 1356篇 |
1974年 | 1543篇 |
1973年 | 1558篇 |
1972年 | 1391篇 |
1971年 | 1353篇 |
1970年 | 1338篇 |
1969年 | 1361篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
Jose M. Morales Jose Angel Martinez-Flores Manuel Serrano Maria José Castro Francisco Javier Alfaro Florencio García Miguel Angel Martínez Amado Andrés Esther González Manuel Praga Estela Paz-Artal Antonio Serrano 《Journal of the American Society of Nephrology : JASN》2015,26(3):735-745
In the current immunosuppressive therapy era, vessel thrombosis is the most common cause of early graft loss after renal transplantation. The prevalence of IgA anti–β2-glycoprotein I antibodies (IgA-aB2GPI-ab) in patients on dialysis is elevated (>30%), and these antibodies correlate with mortality and cardiovascular morbidity. To evaluate the effect of IgA-aB2GPI-ab in patients with transplants, we followed all patients transplanted from 2000 to 2002 in the Hospital 12 de Octubre prospectively for 10 years. Presence of IgA-aB2GPI-ab in pretransplant serum was examined retrospectively. Of 269 patients, 89 patients were positive for IgA-aB2GPI-ab (33%; group 1), and the remaining patients were negative (67%; group 2). Graft loss at 6 months post-transplant was significantly higher in group 1 (10 of 89 versus 3 of 180 patients in group 2; P=0.002). The most frequent cause of graft loss was thrombosis of the vessels, which was observed only in group 1 (8 of 10 versus 0 of 3 patients in group 2; P=0.04). Multivariate analysis showed that the presence of IgA-aB2GPI-ab was an independent risk factor for early graft loss (P=0.04) and delayed graft function (P=0.04). There were no significant differences regarding patient survival between the two groups. Graft survival was similar in both groups after 6 months. In conclusion, patients with pretransplant IgA-aB2GPI-ab have a high risk of early graft loss caused by thrombosis and a high risk of delayed graft function. Therefore, pretransplant IgA-aB2GPI-ab may have a detrimental effect on early clinical outcomes after renal transplantation. 相似文献
25.
26.
27.
Ciléin Kearns Nethmi Kearns Anna M. Paisley 《Journal of visual communication in medicine》2020,43(2):76-83
AbstractSupporting patients in making informed healthcare decisions is a cornerstone of ethical medical practice. Surgeons frequently draw for and show images to patients when consenting them for operations but the value of this practice in informed decision-making is unclear. An audit was conducted in a General Surgery Department. 244 patients completed questionnaires on the value of visual materials when giving consent for surgery. The complexity of the operations was classified into “simple”, “moderate” or “complex”. 100% of patients felt they had given informed consent to surgery. 62% of patients received at least one form of visual material during the consenting process. All patients who received a drawing, and 99% of those provided with other images, valued these resources. Visual materials were considered more useful to patients when giving consent for moderate or complex operations than simple ones. Approximately one third of patients who did not receive visual materials would have appreciated these when making an informed decision. This research highlights the value of surgeons drawing for, and providing other visual resources to, their patients as part of the consent process. There is a role for further research and training materials in drawing skills for surgeons. 相似文献
28.
Ruiz-Úcar Elena Acín-Gándara Débora Medina-García Manuel Ronda Diego Cruzado Pereira-Pérez Fernando 《Obesity surgery》2022,32(2):569-570
Obesity Surgery - Laparoscopic sleeve gastrectomy (LSG) is increasingly playing a key role in obesity management. Such operations, however, carry complications sometimes including leaks. The... 相似文献
29.
Rocha Déborah Ribeiro Nery Jaqueline Freire Furini Leonardo Negri Constantino Carlos José Leopoldo Eller Lizziane Kretli Winkelströter Nai Gisele Alborghetti Nakagaki Wilson Romero 《Lasers in medical science》2020,35(8):1703-1709
Lasers in Medical Science - Studies reported the harmful effects of 2,4-D on body tissues, provoking changes in the anatomy and physiology of the kidneys, liver, and testicles. Thus, the objective... 相似文献
30.