全文获取类型
收费全文 | 1105148篇 |
免费 | 76636篇 |
国内免费 | 3813篇 |
专业分类
耳鼻咽喉 | 15196篇 |
儿科学 | 35047篇 |
妇产科学 | 29003篇 |
基础医学 | 157341篇 |
口腔科学 | 30158篇 |
临床医学 | 99057篇 |
内科学 | 208303篇 |
皮肤病学 | 24691篇 |
神经病学 | 82839篇 |
特种医学 | 44042篇 |
外国民族医学 | 230篇 |
外科学 | 166575篇 |
综合类 | 27610篇 |
现状与发展 | 10篇 |
一般理论 | 266篇 |
预防医学 | 76705篇 |
眼科学 | 25353篇 |
药学 | 89691篇 |
38篇 | |
中国医学 | 4788篇 |
肿瘤学 | 68654篇 |
出版年
2021年 | 9596篇 |
2019年 | 8971篇 |
2018年 | 12483篇 |
2017年 | 10014篇 |
2016年 | 11111篇 |
2015年 | 12784篇 |
2014年 | 17177篇 |
2013年 | 23913篇 |
2012年 | 32972篇 |
2011年 | 35027篇 |
2010年 | 20631篇 |
2009年 | 19133篇 |
2008年 | 31605篇 |
2007年 | 33820篇 |
2006年 | 34331篇 |
2005年 | 32592篇 |
2004年 | 30837篇 |
2003年 | 29621篇 |
2002年 | 28461篇 |
2001年 | 60724篇 |
2000年 | 62158篇 |
1999年 | 51627篇 |
1998年 | 12874篇 |
1997年 | 11447篇 |
1996年 | 11355篇 |
1995年 | 10647篇 |
1994年 | 9661篇 |
1993年 | 9029篇 |
1992年 | 37991篇 |
1991年 | 36470篇 |
1990年 | 35946篇 |
1989年 | 34432篇 |
1988年 | 30993篇 |
1987年 | 30082篇 |
1986年 | 28317篇 |
1985年 | 26520篇 |
1984年 | 19249篇 |
1983年 | 16149篇 |
1982年 | 8843篇 |
1979年 | 17043篇 |
1978年 | 11408篇 |
1977年 | 10242篇 |
1976年 | 8843篇 |
1975年 | 10077篇 |
1974年 | 11665篇 |
1973年 | 11281篇 |
1972年 | 10764篇 |
1971年 | 10097篇 |
1970年 | 9256篇 |
1969年 | 8943篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
Hassen Lena M. Albarrak Rana A. Albahlal Reem A. Alsaqabi Dimah K. Hassen Ikhlass M. Daghestani Maha H. Alqurtas Eman M. Alkhalaf Abdulaziz T. Bedaiwi Mohammed K. Omair Mohammed A. Almaghlouth Ibrahim A. 《Quality of life research》2022,31(11):3229-3239
Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional... 相似文献
3.
Molnár B. Aroca S. Dobos A. Orbán K. Szabó J. Windisch P. Stähli A. Sculean A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with... 相似文献
4.
5.
6.
7.
Zongzhang Huang Qigu Yao Jianping Zhu Ying He Yanghao Chen Feng Wu Teng Hua 《Diagnostic and interventional imaging》2021,102(5):279-285
PurposeThe purpose of this study was to make a systematic review and meta-analysis to determine the stent diameter (8 mm vs. 10 mm) that conveys better safety and clinical efficacy for transjugular intrahepatic portosystemic shunt (TIPS).Materials and methodsFour databases were used to identify clinical trials published from inception until March 2020. Data were extracted to estimate and compare one-year and three-year overall survivals, hepatic encephalopathy, variceal rebleeding, and shunt dysfunction rates between patients with 8 mm covered stents and those with 10 mm covered stents.ResultsFive eligible studies were selected, which included 489 patients (316 men, 173 women). The 8 mm covered stent group had higher efficacy regarding one-year or three-year overall survival (odds ratio [OR], 2.88; P = 0.003) and (OR, 1.81; P = 0.04) and lower hepatic encephalopathy (OR, 0.69; P = 0.04) compared with 10 mm covered stent group. There were no significant differences in variceal rebleeding rate (OR 0.80; P = 0.67). However, shunt dysfunction was lower in 10 mm covered stent group (OR, 2.26; P = 0.003).ConclusionsOur results suggest that the use of 8 mm covered stents should be preferred to that of 10 mm covered stents for TIPS placement when portal pressure is frequently monitored. 相似文献
8.
9.
Jesus K Yamamoto-Furusho Norma N Parra-Holgu n 《World journal of gastroenterology : WJG》2021,27(48):8242-8261
Inflammatory bowel disease (IBD) is a chronic disease that requires chronic treatment throughout the evolution of the disease, with a complex physiopathology that entails great challenges for the development of new and specific treatments for ulcerative colitis and Crohn´s disease. The anti-tumor necrosis factor alpha therapy has impacted the clinical course of IBD in those patients who do not respond to conventional treatment, so there is a need to develop new therapies and markers of treatment response. Various pathways involved in the development of the disease are known and the new therapies have focused on blocking the inflammatory process at the gastrointestinal level by oral, intravenous, subcutaneous, and topical route. All these new therapies can lead to more personalized treatments with higher success rates and fewer relapses. These treatments have not only focused on clinical remission, but also on achieving macroscopic changes at the endoscopic level and microscopic changes by achieving mucosal healing. These treatments are mainly based on modifying signaling pathways, by blocking receptors or ligands, reducing cell migration and maintaining the integrity of the epithelial barrier. Therefore, this review presents the efficacy and safety of the new treatments that are currently under study and the advances that have been made in this area in recent years. 相似文献