全文获取类型
收费全文 | 177106篇 |
免费 | 1069篇 |
国内免费 | 10篇 |
专业分类
耳鼻咽喉 | 1156篇 |
儿科学 | 6740篇 |
妇产科学 | 3032篇 |
基础医学 | 16678篇 |
口腔科学 | 1592篇 |
临床医学 | 12555篇 |
内科学 | 31158篇 |
皮肤病学 | 707篇 |
神经病学 | 16532篇 |
特种医学 | 8937篇 |
外国民族医学 | 1篇 |
外科学 | 29134篇 |
综合类 | 2357篇 |
现状与发展 | 1篇 |
预防医学 | 18196篇 |
眼科学 | 2743篇 |
药学 | 9606篇 |
中国医学 | 638篇 |
肿瘤学 | 16422篇 |
出版年
2023年 | 34篇 |
2022年 | 68篇 |
2021年 | 131篇 |
2020年 | 71篇 |
2019年 | 119篇 |
2018年 | 22013篇 |
2017年 | 17423篇 |
2016年 | 19567篇 |
2015年 | 972篇 |
2014年 | 889篇 |
2013年 | 850篇 |
2012年 | 7097篇 |
2011年 | 21105篇 |
2010年 | 18879篇 |
2009年 | 11557篇 |
2008年 | 19562篇 |
2007年 | 21734篇 |
2006年 | 568篇 |
2005年 | 2202篇 |
2004年 | 3434篇 |
2003年 | 4353篇 |
2002年 | 2518篇 |
2001年 | 298篇 |
2000年 | 466篇 |
1999年 | 220篇 |
1998年 | 207篇 |
1997年 | 203篇 |
1996年 | 88篇 |
1995年 | 101篇 |
1994年 | 99篇 |
1993年 | 60篇 |
1992年 | 58篇 |
1991年 | 105篇 |
1990年 | 145篇 |
1989年 | 99篇 |
1988年 | 72篇 |
1987年 | 65篇 |
1986年 | 43篇 |
1985年 | 47篇 |
1984年 | 36篇 |
1983年 | 26篇 |
1982年 | 31篇 |
1980年 | 41篇 |
1974年 | 30篇 |
1970年 | 25篇 |
1938年 | 60篇 |
1937年 | 25篇 |
1934年 | 30篇 |
1932年 | 56篇 |
1930年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
991.
Bastiaan R Klarenbeek Alexander AFA Veenhof Elly SM de Lange Willem A Bemelman Roberto Bergamaschi Piet Heres Antonio M Lacy Wim T van den Broek Donald L van der Peet Miguel A Cuesta 《BMC surgery》2007,7(1):16
Backround
Diverticulosis is a common disease in the western society with an incidence of 33–66%. 10–25% of these patients will develop diverticulitis. In order to prevent a high-risk acute operation it is advised to perform elective sigmoid resection after two episodes of diverticulitis in the elderly patient or after one episode in the younger (< 50 years) patient. Open sigmoid resection is still the gold standard, but laparoscopic colon resections seem to have certain advantages over open procedures. On the other hand, a double blind investigation has never been performed. The Sigma-trial is designed to evaluate the presumed advantages of laparoscopic over open sigmoid resections in patients with symptomatic diverticulitis. 相似文献992.
José M Quintana Inmaculada Arostegui Antonio Escobar Iratxe Lafuente Juan C Arenaza Isidoro Garcia Urko Aguirre 《BMC musculoskeletal disorders》2007,8(1):84
Background
To develop a sensitive and specific screening tool for knee and hip osteoarthritis in the general population of elderly people. 相似文献993.
Background
Chronic plantar heel pain (CPHP) is one of the most common musculoskeletal disorders of the foot, yet its aetiology is poorly understood. The purpose of this study was to examine the association between CPHP and a number of commonly hypothesised causative factors. 相似文献994.
Background
Whilst evidence exists to support the use of single treatments such as orthoses and footwear, the effectiveness of podiatry-led care as a complex intervention for patients with rheumatoid arthritis (RA) related foot problems is unknown. The aim of this study was to undertake an exploratory randomised controlled parallel arm clinical trial (RheumAFooT) to inform the design and implementation of a definitive trial and to understand the potential benefits of this care. 相似文献995.
Background
Hip dislocation in children with cerebral palsy (CP) is a common and severe problem. The dislocation can be avoided, by screening and preventive treatment of children with hips at risk. The aim of this study was to analyse the characteristics of children with CP who develop hip displacement, in order to optimise a hip surveillance programme. 相似文献996.
Ulrich Weber Christian WA Pfirrmann Rudolf O Kissling Juerg Hodler Marco Zanetti 《BMC musculoskeletal disorders》2007,8(1):20
Background
Ankylosing spondylitis is a chronic inflammatory rheumatic disorder which usually begins in early adulthood. The diagnosis is often delayed by many years. MR imaging has become the preferred imaging method for detection of early inflammation of the axial skeleton in ankylosing spondylitis. 相似文献997.
Background
The optimal management of chronic ruptures of the Achilles tendon is surgical reconstruction. Reconstruction of the Achilles tendon using peroneus brevis has been widely reported. Classically, these procedures involve relatively long surgical wounds in a relatively hypovascular area which is susceptible to wound breakdown. 相似文献998.
Carel Bron Michel Wensing Jo LM Franssen Rob AB Oostendorp 《BMC musculoskeletal disorders》2007,8(1):107
Background
Shoulder disorders are a common health problem in western societies. Several treatment protocols have been developed for the clinical management of persons with shoulder pain. However available evidence does not support any protocol as being superior over others. Systematic reviews provide some evidence that certain physical therapy interventions (i.e. supervised exercises and mobilisation) are effective in particular shoulder disorders (i.e. rotator cuff disorders, mixed shoulder disorders and adhesive capsulitis), but there is an ongoing need for high quality trials of physical therapy interventions. Usually, physical therapy consists of active exercises intended to strengthen the shoulder muscles as stabilizers of the glenohumeral joint or perform mobilisations to improve restricted mobility of the glenohumeral or adjacent joints (shoulder girdle). It is generally accepted that a-traumatic shoulder problems are the result of impingement of the subacromial structures, such as the bursa or rotator cuff tendons. Myofascial trigger points (MTrPs) in shoulder muscles may also lead to a complex of symptoms that are often seen in patients diagnosed with subacromial impingement or rotator cuff tendinopathy. Little is known about the treatment of MTrPs in patients with shoulder disorders. 相似文献999.
Stefano Di Domenico Giulio Bovio Maximiliano Gelli Ferruccio Ravazzoni Enzo Andorno Damiano Cottalasso Umberto Valente 《BMC surgery》2007,7(1):18
Background
Liver transplantation in presence of diffuse portal vein thrombosis is possible by using caval blood as portal inflow, through cavo-portal transposition. However, clinical results are heterogeneous and experimental studies are needed, but similar hemodynamic conditions are difficult to obtain, especially in small animals. Herein we describe a new simple model of cavo-portal transposition in rat. 相似文献1000.
Steven Z George John D Childs Deydre S Teyhen Samuel S Wu Alison C Wright Jessica L Dugan Michael E Robinson 《BMC musculoskeletal disorders》2007,8(1):92