全文获取类型
收费全文 | 3092篇 |
免费 | 775篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 89篇 |
儿科学 | 124篇 |
妇产科学 | 42篇 |
基础医学 | 76篇 |
口腔科学 | 10篇 |
临床医学 | 1085篇 |
内科学 | 813篇 |
皮肤病学 | 130篇 |
神经病学 | 219篇 |
特种医学 | 97篇 |
外科学 | 558篇 |
综合类 | 24篇 |
预防医学 | 133篇 |
眼科学 | 95篇 |
药学 | 49篇 |
中国医学 | 1篇 |
肿瘤学 | 339篇 |
出版年
2024年 | 23篇 |
2023年 | 153篇 |
2022年 | 53篇 |
2021年 | 123篇 |
2020年 | 204篇 |
2019年 | 73篇 |
2018年 | 218篇 |
2017年 | 166篇 |
2016年 | 204篇 |
2015年 | 169篇 |
2014年 | 268篇 |
2013年 | 305篇 |
2012年 | 112篇 |
2011年 | 90篇 |
2010年 | 208篇 |
2009年 | 263篇 |
2008年 | 122篇 |
2007年 | 97篇 |
2006年 | 126篇 |
2005年 | 96篇 |
2004年 | 57篇 |
2003年 | 45篇 |
2002年 | 44篇 |
2001年 | 80篇 |
2000年 | 61篇 |
1999年 | 63篇 |
1998年 | 50篇 |
1997年 | 62篇 |
1996年 | 54篇 |
1995年 | 52篇 |
1994年 | 25篇 |
1993年 | 19篇 |
1992年 | 18篇 |
1991年 | 24篇 |
1990年 | 18篇 |
1989年 | 16篇 |
1988年 | 11篇 |
1987年 | 4篇 |
1986年 | 15篇 |
1985年 | 17篇 |
1984年 | 13篇 |
1983年 | 6篇 |
1978年 | 5篇 |
1976年 | 3篇 |
1975年 | 5篇 |
1974年 | 3篇 |
1958年 | 3篇 |
1955年 | 6篇 |
1954年 | 4篇 |
1949年 | 6篇 |
排序方式: 共有3884条查询结果,搜索用时 46 毫秒
81.
Judd E. Hollander MD Lance D. Wilson MD Paul J. Leo DO Richard D. Shih MD 《The Journal of emergency medicine》1996,14(6):2558-736
Previous investigators have noted that patients with cocaine associated chest pain frequently have abnormal electrocardiograms, including ST segment elevation, in the absence of ongoing myocardial ischemia. The effects of these nonischemic ST segment elevations have not been evaluated. We report two patients with cocaine associated chest pain and ST segment elevations who received thrombolytic agents in the absence of myocardial ischemia. Neither patient sustained a myocardial infarction, nor had clinical evidence of reperfusion. The ST segment elevations persisted after resolution of chest pain in both patients, and both of the patients experienced complications of thrombolytic therapy. One patient sustained a hemorrhagic stroke and one had minor oral-pharyngeal bleeding. Given the lack of documented efficacy, concerns about safety, and poor specificity of the electrocardiogram for myocardial ischemia in patients with cocaine associated chest pain, thrombolytic therapy should be used with caution in these patients. 相似文献
82.
83.
84.
85.
86.
Socioeconomic Status May Impact Functional Outcome of Deep Brain Stimulation Surgery in Parkinson's Disease 下载免费PDF全文
87.
Health Services Utilization and Payments in Patients With Cancer Pain: A Comparison of Intrathecal Drug Delivery vs. Conventional Medical Management 下载免费PDF全文
88.
Summary The case of a patient in whom the formation of a chronic recurrent enterocutaneous fistula possibly related to metallic mercury free in the peritoneal cavity has been reported. The mercury originated from a ruptured Cantor tube. This is a rarely reported phenomenon and the first in which the diagnosis was suggested by finding elemental mercury at the time of biopsy via a sigmoidoscope. The mercury was also grossly visible on histological sections. This report emphasizes the adverse effects of metallic mercury when it gains entrance to the peritoneal cavity through a break in the mucosa of the intestinal tract. 相似文献
89.
SCAI core curriculum for adult and pediatric interventional fellowship training in continuous quality assessment and improvement 下载免费PDF全文
Henry S. Jennings MD FSCAI III Sunil V. Rao MD FSCAI Dmitriy N. Feldman MD FSCAI Daniel M. Kolansky MD FSCAI Michael A. Kutcher MD FSCAI Nevin C. Baker DO Charles E. Chambers MD FSCAI Christopher J. Petit MD FSCAI Joaquin E. Cigarroa MD FSCAI 《Catheterization and cardiovascular interventions》2015,86(3):422-431
90.
The coronavirus disease 2019 (COVID-19) pandemic has now affected more than 5 million people globally. Typical symptoms include fever, cough, and shortness of breath. Patients with underlying medical comorbidities such as cardiovascular disease and diabetes are more likely to become severely ill. To date there is limited information on how COVID-19 affects patients with a history migraine. Here, we present the cases of 2 women with a history of migraine whose first symptom of COVID-19 was a severe persistent headache. 相似文献