全文获取类型
收费全文 | 13974篇 |
免费 | 737篇 |
国内免费 | 119篇 |
专业分类
耳鼻咽喉 | 38篇 |
儿科学 | 275篇 |
妇产科学 | 100篇 |
基础医学 | 633篇 |
口腔科学 | 77篇 |
临床医学 | 1235篇 |
内科学 | 3530篇 |
皮肤病学 | 26篇 |
神经病学 | 245篇 |
特种医学 | 477篇 |
外科学 | 6568篇 |
综合类 | 422篇 |
预防医学 | 188篇 |
眼科学 | 27篇 |
药学 | 200篇 |
2篇 | |
中国医学 | 6篇 |
肿瘤学 | 781篇 |
出版年
2024年 | 4篇 |
2023年 | 928篇 |
2022年 | 1148篇 |
2021年 | 1660篇 |
2020年 | 1370篇 |
2019年 | 761篇 |
2018年 | 697篇 |
2017年 | 624篇 |
2016年 | 557篇 |
2015年 | 534篇 |
2014年 | 1580篇 |
2013年 | 1157篇 |
2012年 | 560篇 |
2011年 | 228篇 |
2010年 | 663篇 |
2009年 | 575篇 |
2008年 | 183篇 |
2007年 | 237篇 |
2006年 | 218篇 |
2005年 | 95篇 |
2004年 | 83篇 |
2003年 | 91篇 |
2002年 | 120篇 |
2001年 | 92篇 |
2000年 | 64篇 |
1999年 | 114篇 |
1998年 | 79篇 |
1997年 | 50篇 |
1996年 | 72篇 |
1995年 | 62篇 |
1994年 | 41篇 |
1993年 | 30篇 |
1992年 | 16篇 |
1991年 | 11篇 |
1990年 | 19篇 |
1989年 | 19篇 |
1988年 | 3篇 |
1987年 | 5篇 |
1985年 | 4篇 |
1984年 | 7篇 |
1983年 | 10篇 |
1982年 | 14篇 |
1981年 | 9篇 |
1980年 | 5篇 |
1979年 | 4篇 |
1978年 | 8篇 |
1974年 | 3篇 |
1973年 | 3篇 |
1972年 | 3篇 |
1970年 | 3篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
p53,p16,PCNA蛋白在食管癌中的表达及其临床意义 总被引:3,自引:0,他引:3
目的探讨p53,p16,PCNA蛋白在食管癌中的表达及临床意义。方法用免疫组织化学染色SP法对62例食管癌标本进行p53,p16,PCNA蛋白测定。结果62例食管癌中,p53,PCNA蛋白阳性表达均为71.0%(44/62),p16缺失率48.4%(30/62)。p16缺失与肿瘤浸润深度、淋巴结转移密切相关(P<0.05、P<0.01)。而p53,PCNA蛋白同时表达56.5%(35/62),亦与肿瘤浸润深度、淋巴结转移密切相关(P<0.05、P<0.01)。结论食管癌p53,PCNA蛋白同时表达及p16缺失可视为危险预后因素。 相似文献
103.
104.
105.
J. Holstein D. Farge N. Taright L. Trinquart D. Manac’h T. Bastianic G. Chatellier 《Revue d'épidémiologie et de santé publique》2009,57(3):205-211
BackgroundSeveral studies have shown that socioeconomic deprivation is associated with increased hospitalization lengths of stay (LOS) and costs. Yet, the French DRG-based information system (PMSI) does not take deprived situations into account. Hence, we aimed at extracting routinely available variables measuring deprivation from the Hospital Information System and at assessing their association with severity of illness and hospital LOS.MethodsWe performed record linkage between the PMSI database concerning stays of patients aged more than 16 years in the short-stay sector of Assistance publique–Hôpitaux de Paris in 2007 and an administrative database which provided the following deprivation measures: recipients of Couverture Médicale Universelle (basic or complementary health insurances adapted for underprivileged French citizens) or Aide Médicale d’État (health and medical emergency insurances adapted for underprivileged non French citizens living in France) and homeless patients. We compared length of stays showing a deprivation measure to others after adjustment on morbidity, age and sex.ResultsAmong 352,721 stays, the prevalence of the deprivation measures ranged from 0.71% for “homelessness” to 6.24% for complementary Couverture Médicale Universelle. Stays showing a deprivation measure had specific illnesses and had more frequently associated comorbidities or complications than others. After adjustment, deprivation measures were associated with significantly increased LOS (by 5% for Couverture Médicale Universelle to 48% for emergency Aide Médicale d’État.ConclusionRoutine extraction of deprivation measures from Hospital Information Systems is feasible. Age, sex and illness being equal, these deprivation measures were associated with more complicated cases and increased LOS. We recommend that case mix-based hospital prospective payment systems take socioeconomic deprivation into account. 相似文献
106.
107.
108.
A. P. C. Yim 《Surgical endoscopy》1995,9(11):1184-1188
The author reports his personal experience on the management of anterior mediastinal masses using video-assisted thoracoscopic surgery (VATS) at a single institution. From August 1993 to March 1995, 24 patients (14 males and 10 females ranging in age from 9 to 76 years old) with anterior mediastinal masses were diagnosed or treated by VATS. This consisted of 11 biopsies and 13 resections (11 thymectomies and 2 thymic cystectomies). Seven biopsies were performed for primary histological diagnosis (four non-Hodgkin's lymphoma, two metastatic carcinoma, one yolk sac tumor) and four biopsies were performed to detect residual tumors following chemotherapy. Complete thymectomy was accomplished in all 11 cases by examination of the thymic bed and resected specimen. We have reserved this approach for resection of benign masses only. Adequate biopsy for histological diagnosis was obtained in all 11 cases to guide further management. There was no surgical mortality or intraoperative complications. The median postoperative hospital stay for the entire group was 3 days. We conclude that VATS for resection or biopsy of an anterior mediastinal mass is technically feasible and provides an alternative to the conventional approaches in selected patients. 相似文献
109.
A. Zuckermann M.D. M. Grimm Regine Ahner Paul Simon Peter Buxbaum G. Laufer E. Wolner 《European Surgery》1996,28(3):176-177
Summary
Background Pregnancy is prossible in female patients who underwent cardiac transplantation but is associated with unpredictable risks.
Methods A 23-year old female patient underwent cardiac transplantation because of dilatative cardiomyopathy.
Results Against our advice, she became pregnant 4 months after transplantation. Following an uneventful pregnancy, spontaneous vaginal
delivery occurred 13 months after transplantation. The patient gave birth to a healthy new-born in good physical condition.
Thereafter, the patient refused to attend any further routine follow-up control. 9 months after delivery, the patient was
admitted to hospital in severe cardiac shock. Biopsy showed a serious, acute rejection which was treated with a course of
methylprednisolone. Clinically, the patient recovered within 1 week, but died from acute myocardial infarction 1 day after
discharge from hospital.
Conclusions Only women without a history of rejection episodes, with good kidney function, good graft function, and high compliance should
be counselled to become pregnant.
相似文献
110.