全文获取类型
收费全文 | 25396篇 |
免费 | 1476篇 |
国内免费 | 76篇 |
专业分类
耳鼻咽喉 | 494篇 |
儿科学 | 1525篇 |
妇产科学 | 712篇 |
基础医学 | 2233篇 |
口腔科学 | 456篇 |
临床医学 | 1873篇 |
内科学 | 5663篇 |
皮肤病学 | 449篇 |
神经病学 | 1452篇 |
特种医学 | 819篇 |
外科学 | 4624篇 |
综合类 | 523篇 |
一般理论 | 3篇 |
预防医学 | 1331篇 |
眼科学 | 1061篇 |
药学 | 1944篇 |
1篇 | |
中国医学 | 104篇 |
肿瘤学 | 1681篇 |
出版年
2023年 | 192篇 |
2022年 | 409篇 |
2021年 | 908篇 |
2020年 | 496篇 |
2019年 | 691篇 |
2018年 | 826篇 |
2017年 | 595篇 |
2016年 | 622篇 |
2015年 | 657篇 |
2014年 | 1006篇 |
2013年 | 1271篇 |
2012年 | 1853篇 |
2011年 | 1777篇 |
2010年 | 1131篇 |
2009年 | 852篇 |
2008年 | 1353篇 |
2007年 | 1336篇 |
2006年 | 1265篇 |
2005年 | 1174篇 |
2004年 | 1040篇 |
2003年 | 891篇 |
2002年 | 822篇 |
2001年 | 522篇 |
2000年 | 540篇 |
1999年 | 440篇 |
1998年 | 209篇 |
1997年 | 169篇 |
1996年 | 142篇 |
1995年 | 152篇 |
1994年 | 129篇 |
1993年 | 106篇 |
1992年 | 288篇 |
1991年 | 266篇 |
1990年 | 241篇 |
1989年 | 230篇 |
1988年 | 192篇 |
1987年 | 194篇 |
1986年 | 167篇 |
1985年 | 186篇 |
1984年 | 164篇 |
1983年 | 150篇 |
1982年 | 75篇 |
1981年 | 87篇 |
1980年 | 70篇 |
1979年 | 127篇 |
1978年 | 92篇 |
1974年 | 75篇 |
1973年 | 110篇 |
1972年 | 100篇 |
1971年 | 68篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
IntroductionHip displacement is common in cerebral palsy (CP) and is related to the severity of neurological and functional impairment. It is a silent, but progressive disease, and can result in significant morbidity and decreased quality of life, if left untreated. The pathophysiology of hip displacement in CP is a combination of hip flexor-adductor muscle spasticity, abductor muscle weakness, and delayed weight-bearing, resulting in proximal femoral deformities and progressive acetabular dysplasia. Due to a lack of symptoms in the early stages of hip displacement, the diagnosis is easily missed. Awareness of this condition and regular surveillance by clinical examination and serial radiographs of the hips are the key to early diagnosis and treatment.Hip surveillance programmesSeveral population-based studies from around the world have demonstrated that universal hip surveillance in children with CP allows early detection of hip displacement and appropriate early intervention, with a resultant decrease in painful dislocations. Global hip surveillance models are based upon the patients’ age, functional level determined by the Gross Motor Function Classification system (GMFCS), gait classification, standardized clinical exam, and radiographic indices such as the migration percentage (MP), as critical indicators of progressive hip displacement.ConclusionDespite 25 years of evidence showing the efficacy of established hip surveillance programmes, there is poor awareness among healthcare professionals in India about the importance of regular hip surveillance in children with CP. There is a need for professional organizations to develop evidence-based guidelines for hip surveillance which are relevant to the Indian context. 相似文献
3.
4.
Rohi Shah Nomaan Sheikh Jitendra Mangwani Nicolette Morgan Hamidreza Khairandish 《Journal of Clinical Orthopaedics and Trauma》2021,12(1):138
Demographic projections for hip fragility fractures indicate a rising annual incidence by virtue of a multimorbid, ageing population with more noncommunicable diseases (NCDs). NCDs are characterised by slow progression and long duration ranging from ischaemic cardiovascular disease, cerebrovascular disease, diabetes, chronic obstructive pulmonary disease to various cancers. Management of this disease burden often involves commencing patients on oral anticoagulants to reduce the risk of thromboembolic events. The use of direct oral anticoagulants (DOACs) in clinical practice has increased due to their rapid onset of action, short half-life and predictable anticoagulant effects, without the need for routine monitoring. Safe and timely surgical intervention relies on reversal of anticoagulants. However, the lack of specific evidence-based guidelines for the perioperative management of patients on DOACs with hip fractures has proved challenging; in particular, the accessibility of DOAC-specific assays, justification of the cost-benefit ratio of targeted reversal agents and indications for neuraxial anaesthesia. This has led to potentially avoidable delays in surgical intervention. Following a literature review of the pharmacokinetic and pharmacodynamics of commonly used DOACs in our region including the role of surrogate markers, we propose a systematic, evidence-based guideline to the perioperative management of hip fractures DOACs. We believe this standardised protocol can be easily replicated between hospitals. We recommend that if patients are deemed suitable for a general anaesthesia, with satisfactory renal function, optimal surgical time should be 24 h following the last ingested dose of DOAC. 相似文献
5.
6.
7.
8.
Bryan Mclaughlin JungHwan Yang Woohyun Yoo Bret Shaw Soo Yun Kim Dhavan Shah 《Health communication》2016,31(6):762-771
The growth of online support groups has led to an expression effects paradigm within the health communication literature. Although religious support expression is characterized as a typical subdimension of emotional support, we argue that in the context of a life-threatening illness, the inclusion of a religious component creates a unique communication process. Using data from an online group for women with breast cancer, we test a theoretical expression effects model. Results demonstrate that for breast cancer patients, religious support expression has distinct effects from general emotional support messages, which highlights the need to further theorize expression effects along these lines. 相似文献
9.