首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   69054篇
  免费   3981篇
  国内免费   2100篇
耳鼻咽喉   451篇
儿科学   1217篇
妇产科学   751篇
基础医学   6385篇
口腔科学   1110篇
临床医学   5823篇
内科学   7189篇
皮肤病学   612篇
神经病学   3836篇
特种医学   1645篇
外国民族医学   6篇
外科学   6385篇
综合类   11685篇
现状与发展   1篇
一般理论   4篇
预防医学   5837篇
眼科学   1014篇
药学   9458篇
  112篇
中国医学   9490篇
肿瘤学   2124篇
  2024年   201篇
  2023年   1044篇
  2022年   1847篇
  2021年   2509篇
  2020年   2288篇
  2019年   2385篇
  2018年   2099篇
  2017年   1986篇
  2016年   1891篇
  2015年   1698篇
  2014年   4031篇
  2013年   3706篇
  2012年   3654篇
  2011年   4485篇
  2010年   4047篇
  2009年   3010篇
  2008年   2814篇
  2007年   3052篇
  2006年   2844篇
  2005年   2926篇
  2004年   2566篇
  2003年   2133篇
  2002年   1317篇
  2001年   1213篇
  2000年   995篇
  1999年   950篇
  1998年   751篇
  1997年   742篇
  1996年   693篇
  1995年   840篇
  1994年   796篇
  1993年   695篇
  1992年   647篇
  1991年   602篇
  1990年   482篇
  1989年   503篇
  1988年   490篇
  1987年   418篇
  1986年   399篇
  1985年   621篇
  1984年   585篇
  1983年   380篇
  1982年   523篇
  1981年   500篇
  1980年   479篇
  1979年   425篇
  1978年   389篇
  1977年   350篇
  1976年   304篇
  1974年   180篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
PurposeTo review and to compare indirectly the outcomes of minimally invasive therapies for the treatment of lower urinary tract symptoms secondary to benign prostatic hyperplasia.Materials and MethodsA literature search via Medline and Cochrane Central databases was completed for randomized control studies published between January 2000 to April 2020 for the following therapies: Rezum, Urolift, Aquablation, and prostatic artery embolization (PAE). Data on the following variables were included: International prostate symptom score (IPSS), maximum urinary flow rate, quality of life, and postvoid residual (PVR). Standard mean differences between treatments were compared through a meta-analysis using transurethral resection of the prostate (TURP) to assess differences in treatment effect.ResultsThere was no significant difference in outcomes between therapies for IPSS at the 3, 6, and 12-month follow ups. Although outcomes for Rezum were only available out to 3 months, there were no consistently significant differences in outcomes when comparing Aquablation versus PAE versus Rezum. TURP PVR was significantly better than Urolift at 3, 6, and 12 months. No significant differences in minor or major adverse events were noted.ConclusionAlthough significant differences in outcomes were limited, Aquablation and PAE were the most durable at 12 months. PAE has been well studied on multiple randomized control trials with minimal adverse events while Aquablation has limited high quality data and has been associated with bleeding-related complications.  相似文献   
6.
Background/PurposeA small number of Hirschsprung disease (HD) patients develop inflammatory bowel disease (IBD)-like symptoms after pullthrough surgery. The etiology and pathophysiology of Hirschsprung-associated IBD (HD-IBD) remains unknown. This study aims to further characterize HD-IBD, to identify potential risk factors and to evaluate response to treatment in a large group of patients.MethodsRetrospective study of patients diagnosed with IBD after pullthrough surgery between 2000 and 2021 at 17 institutions. Data regarding clinical presentation and course of HD and IBD were reviewed. Effectiveness of medical therapy for IBD was recorded using a Likert scale.ResultsThere were 55 patients (78% male). 50% (n = 28) had long segment disease. Hirschsprung-associated enterocolitis (HAEC) was reported in 68% (n = 36). Ten patients (18%) had Trisomy 21. IBD was diagnosed after age 5 in 63% (n = 34). IBD presentation consisted of colonic or small bowel inflammation resembling IBD in 69% (n = 38), unexplained or persistent fistula in 18% (n = 10) and unexplained HAEC >5 years old or unresponsive to standard treatment in 13% (n = 7). Biological agents were the most effective (80%) medications. A third of patients required a surgical procedure for IBD.ConclusionMore than half of the patients were diagnosed with HD-IBD after 5 years old. Long segment disease, HAEC after pull through operation and trisomy 21 may represent risk factors for this condition. Investigation for possible IBD should be considered in children with unexplained fistulae, HAEC beyond the age of 5 or unresponsive to standard therapy, and symptoms suggestive of IBD. Biological agents were the most effective medical treatment.Level of EvidenceLevel 4  相似文献   
7.
8.
9.
10.
穴位埋线是长效针灸,是在传统针具和针法基础上建立和发展起来的,是针灸技术的发展和延伸,穴位埋线的核心技术是穿刺技术,穴位埋线的三大要素中,针具、埋藏物、穿刺技巧之间是互相影响、互相促进的。针具的改进成功实现了穴位埋线疗法的第一次飞跃,埋藏物的改进成功实现了穴位埋线疗法的第二次飞跃,穿刺技术的改进和创新是穴位埋线疗法的第三次飞跃。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号