全文获取类型
收费全文 | 196734篇 |
免费 | 46528篇 |
国内免费 | 729篇 |
专业分类
耳鼻咽喉 | 2731篇 |
儿科学 | 7813篇 |
妇产科学 | 3301篇 |
基础医学 | 32089篇 |
口腔科学 | 9246篇 |
临床医学 | 22902篇 |
内科学 | 50179篇 |
皮肤病学 | 10238篇 |
神经病学 | 24505篇 |
特种医学 | 4986篇 |
外国民族医学 | 1篇 |
外科学 | 25741篇 |
综合类 | 524篇 |
一般理论 | 78篇 |
预防医学 | 15688篇 |
眼科学 | 3402篇 |
药学 | 13661篇 |
1篇 | |
中国医学 | 1429篇 |
肿瘤学 | 15476篇 |
出版年
2024年 | 131篇 |
2023年 | 1167篇 |
2022年 | 2487篇 |
2021年 | 5385篇 |
2020年 | 7351篇 |
2019年 | 13767篇 |
2018年 | 13722篇 |
2017年 | 13945篇 |
2016年 | 15068篇 |
2015年 | 15348篇 |
2014年 | 16487篇 |
2013年 | 18498篇 |
2012年 | 14169篇 |
2011年 | 14550篇 |
2010年 | 14347篇 |
2009年 | 9964篇 |
2008年 | 10410篇 |
2007年 | 9368篇 |
2006年 | 8724篇 |
2005年 | 7937篇 |
2004年 | 7178篇 |
2003年 | 6424篇 |
2002年 | 5965篇 |
2001年 | 1394篇 |
2000年 | 1154篇 |
1999年 | 987篇 |
1998年 | 992篇 |
1997年 | 784篇 |
1996年 | 675篇 |
1995年 | 575篇 |
1994年 | 557篇 |
1993年 | 475篇 |
1992年 | 400篇 |
1991年 | 286篇 |
1990年 | 281篇 |
1989年 | 253篇 |
1988年 | 235篇 |
1987年 | 193篇 |
1986年 | 212篇 |
1985年 | 159篇 |
1984年 | 194篇 |
1983年 | 182篇 |
1982年 | 218篇 |
1981年 | 177篇 |
1980年 | 162篇 |
1979年 | 110篇 |
1978年 | 110篇 |
1977年 | 106篇 |
1976年 | 90篇 |
1974年 | 83篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
Hyun Jong Choi Jong Ho Moon Yun Nah Lee Hyun Su Kim Ji Su Ha Tae Hoon Lee Sang‐Woo Cha Young Deok Cho Sang‐Heum Park 《Digestive endoscopy》2015,27(7):772-775
Direct peroral cholangioscopy (POC) using an ultra‐slim upper endoscope is one modality of POC for intraductal endoscopic evaluation and treatment of the bile duct. Choledochoduodenostomy (CDS) is one modality of biliary bypass surgery that provides a new route to the bile duct. We carried out direct POC using an ultra‐slim upper endoscope without the use of accessories in 10 patients (four sump syndromes, three bile duct strictures and three intrahepatic duct stones) previously undergoing surgical CDS. Direct POC was successful in all patients. The use of an intraductal balloon catheter was required in one patient for advancement of the endoscope into the bile duct. Distal bile ducts with sump syndromes were cleared using baskets and water irrigation under direct POC. Cholangiocarcinoma was diagnosed in one patient with hilar bile duct stricture after cholangioscopic evaluation and a targeting forceps biopsy under direct POC. Intrahepatic duct stones were successfully extracted after intraductal fragmentation under direct POC. Oozing bleeding occurred during intraductal lithotripsy but stopped spontaneously. Direct POC using an ultra‐slim upper endoscope without the assistance of accessories can easily be carried out in patients undergoing CDS. 相似文献
3.
A case of Rubinstein‐Taybi syndrome associated with growth hormone deficiency in childhood 下载免费PDF全文
4.
5.
6.
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
7.
Improvement in Tricuspid Annular Plane Systolic Excursion with Pulmonary Hypertension Therapy in Pediatric Patients 下载免费PDF全文
8.
Well‐being,health and fitness of children who use wheelchairs: Feasibility study protocol to develop child‐centred ‘keep‐fit’ exercise interventions 下载免费PDF全文
9.
Interprofessional collaboration and communication in nursing homes: a qualitative exploration of problems in medical care for nursing home residents – study protocol 下载免费PDF全文
10.
Quality of life in stroke survivor–caregiver dyads: a new conceptual framework and longitudinal study protocol 下载免费PDF全文