全文获取类型
收费全文 | 8898篇 |
免费 | 492篇 |
国内免费 | 46篇 |
专业分类
耳鼻咽喉 | 131篇 |
儿科学 | 366篇 |
妇产科学 | 356篇 |
基础医学 | 1133篇 |
口腔科学 | 157篇 |
临床医学 | 671篇 |
内科学 | 2195篇 |
皮肤病学 | 239篇 |
神经病学 | 692篇 |
特种医学 | 387篇 |
外科学 | 1287篇 |
综合类 | 48篇 |
预防医学 | 609篇 |
眼科学 | 163篇 |
药学 | 525篇 |
中国医学 | 37篇 |
肿瘤学 | 440篇 |
出版年
2022年 | 42篇 |
2021年 | 102篇 |
2020年 | 73篇 |
2019年 | 125篇 |
2018年 | 135篇 |
2017年 | 100篇 |
2016年 | 105篇 |
2015年 | 160篇 |
2014年 | 215篇 |
2013年 | 295篇 |
2012年 | 349篇 |
2011年 | 373篇 |
2010年 | 239篇 |
2009年 | 222篇 |
2008年 | 425篇 |
2007年 | 492篇 |
2006年 | 486篇 |
2005年 | 471篇 |
2004年 | 444篇 |
2003年 | 396篇 |
2002年 | 434篇 |
2001年 | 354篇 |
2000年 | 377篇 |
1999年 | 302篇 |
1998年 | 169篇 |
1997年 | 139篇 |
1996年 | 148篇 |
1995年 | 114篇 |
1994年 | 117篇 |
1993年 | 110篇 |
1992年 | 185篇 |
1991年 | 167篇 |
1990年 | 143篇 |
1989年 | 138篇 |
1988年 | 144篇 |
1987年 | 138篇 |
1986年 | 96篇 |
1985年 | 93篇 |
1984年 | 71篇 |
1983年 | 50篇 |
1982年 | 47篇 |
1981年 | 47篇 |
1979年 | 47篇 |
1978年 | 32篇 |
1977年 | 32篇 |
1976年 | 31篇 |
1973年 | 38篇 |
1971年 | 27篇 |
1970年 | 37篇 |
1968年 | 39篇 |
排序方式: 共有9436条查询结果,搜索用时 31 毫秒
1.
2.
3.
José Luis R Martin Víctor Pérez Montse Sacristán Fernando Rodríguez-Artalejo Cristóbal Martínez Enric Alvarez 《European psychiatry》2006,21(1):11-20
OBJECTIVE: To assess antipsychotic medication in the treatment of schizophrenia, based on trial drop-out rates. METHOD: The studies included were randomised controlled trials that compared any of the four clinically best-established atypical antipsychotics (quetiapine, olanzapine, risperidone or clozapine) against either of two typical antipsychotics regarded as the gold standard (haloperidol or chlorpromazine). RESULTS: Meta-analysis indicated less risk of all-cause patient withdrawal from atypical medication trials where dosage was flexible, in both the short, relative risk (RR) 0.70 (95% CI 0.64-0.76), P<0.00001, and long term, RR 0.72 (0.65-0.80), P<0.00001. Similar results were observed for withdrawal due to adverse events, RR: 0.54 (0.41-0.72), P<0.0001. Nevertheless, the favourable effects of atypical medication disappeared in trials relying on fixed dosage. CONCLUSIONS: We detected a significant positive effect in terms of the outcome of treatment discontinuation for atypical versus typical medication, though only where the use of flexible rather than fixed doses (closer to an experimental control situation) was possible. 相似文献
4.
5.
Computed tomographic (CT) scans of the brain in a child with Smith-Lemli-Opitz syndrome revealed enlargement of the ventricular system, hypoplasia of the cerebellum, and abnormal thickening of the gray matter, consistent with pachygyria. These findings have been previously noted in autopsies performed on patients with this disorder. We conclude that CT scanning is a valuable tool in the evaluation of children suspected of having the Smith-Lemli-Opitz syndrome. 相似文献
6.
T López-Alburquerque A García Miguel J J Ruiz Ezquerro J de Portugal Alvarez 《Journal of neurology, neurosurgery, and psychiatry》1987,50(4):428-434
The nerve action potential at the elbow and somatosensory evoked potentials (SEPs) at the scalp were recorded over 30 minutes of tourniquet-induced limb ischaemia in 10 diabetic patients and 10 controls. According to the SEP changes, an increased resistance to nerve ischaemia in diabetic patients was observed. The pathways involved in SEP conduction are discussed. 相似文献
7.
Infantile Digital Fibroma Treated With Mohs Micrographic Surgery 总被引:2,自引:0,他引:2
John G. Albertini MD Maj USAF MC Michael Jude Welsch MD CPT USA MC Leo A. Conger MD LTC USA MC Lester F. Libow MD COL USA MC Dirk M. Elston MD COL USA MC 《Dermatologic surgery》2002,28(10):959-961
BACKGROUND: Infantile digital fibroma (IDF) is a rare benign fibrous tumor of childhood that frequently recurs despite local excision. Conservative, nonsurgical management may result in regression and/or joint deformity. OBJECTIVE: To describe the histologic features of IDF and discuss a case excised using Mohs micrographic surgery (MMS). METHODS: Case report and review of the clinical, histologic, and ultrastructural features. RESULTS: Characteristic inclusion bodies of actin were identified with hematoxylin and eosin, Masson's trichrome, and rapid actin immunostain. The tumor was debulked and the majority was removed after one stage of MMS, except where the deep margin approached the joint space. The defect healed by secondary intention. At 2 years the patient had no recurrence or functional joint deformity. CONCLUSION: MMS is a surgical treatment option for IDF. 相似文献
8.
9.
10.
T Theorell J Svensson S Knox D Waller M Alvarez 《Journal of psychosomatic research》1986,30(2):243-249
Men who had high, medium and low blood pressure at age 18 (compulsory screening for military service in Stockholm) were examined ten years later at age 28. Interviewers, having had no information regarding past or present blood pressure, interviewed them about life events experienced during the year preceding the examination. Men with high blood pressure at rest reported fewer life events for the past year than other men. Furthermore, high plasma adrenaline levels at rest were associated with few reported life events. 相似文献