全文获取类型
收费全文 | 1824378篇 |
免费 | 154383篇 |
国内免费 | 5912篇 |
专业分类
耳鼻咽喉 | 26297篇 |
儿科学 | 60322篇 |
妇产科学 | 48253篇 |
基础医学 | 243915篇 |
口腔科学 | 50150篇 |
临床医学 | 175320篇 |
内科学 | 374426篇 |
皮肤病学 | 45480篇 |
神经病学 | 144180篇 |
特种医学 | 69560篇 |
外国民族医学 | 242篇 |
外科学 | 293274篇 |
综合类 | 39188篇 |
现状与发展 | 75篇 |
一般理论 | 532篇 |
预防医学 | 130405篇 |
眼科学 | 43245篇 |
药学 | 124432篇 |
8篇 | |
中国医学 | 4489篇 |
肿瘤学 | 110880篇 |
出版年
2021年 | 15386篇 |
2020年 | 13236篇 |
2019年 | 15328篇 |
2018年 | 26393篇 |
2017年 | 21686篇 |
2016年 | 23982篇 |
2015年 | 26254篇 |
2014年 | 39824篇 |
2013年 | 51652篇 |
2012年 | 57541篇 |
2011年 | 60227篇 |
2010年 | 41968篇 |
2009年 | 43375篇 |
2008年 | 56659篇 |
2007年 | 58330篇 |
2006年 | 60983篇 |
2005年 | 55804篇 |
2004年 | 53386篇 |
2003年 | 49892篇 |
2002年 | 48203篇 |
2001年 | 95149篇 |
2000年 | 96294篇 |
1999年 | 79821篇 |
1998年 | 22974篇 |
1997年 | 20332篇 |
1996年 | 20333篇 |
1995年 | 19532篇 |
1994年 | 16949篇 |
1993年 | 15429篇 |
1992年 | 58561篇 |
1991年 | 56491篇 |
1990年 | 53903篇 |
1989年 | 51777篇 |
1988年 | 47024篇 |
1987年 | 45670篇 |
1986年 | 43005篇 |
1985年 | 40605篇 |
1984年 | 29823篇 |
1983年 | 25362篇 |
1982年 | 14336篇 |
1979年 | 25794篇 |
1978年 | 17873篇 |
1977年 | 15248篇 |
1976年 | 14081篇 |
1975年 | 14802篇 |
1974年 | 17831篇 |
1973年 | 17147篇 |
1972年 | 15947篇 |
1971年 | 14633篇 |
1970年 | 13651篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Jamaal L. Benjamin MD PhD Rebecca Dennis DO Stacy White Jr MD David Munson MD Sudha A. Anupindi MD Maciej Piskunowicz MD Kassa Darge MD PhD Ami Gokli MD Misun Hwang MD 《Journal of ultrasound in medicine》2020,39(5):1031-1036
Bowel diseases of prematurity, including necrotizing enterocolitis, are dreaded ailments of neonates. Early diagnosis is difficult, with clinical and radiographic findings often inconclusive. We present a novel use of contrast-enhanced ultrasound in detection of pediatric bowel disease. Early identification of compromised blood flow or an at-risk bowel can be quantitatively detected and monitored. This ability has implications for guidance of emerging therapies, allowing targeting of inflammation. These findings represent an advancement in detection of bowel disease in neonates. 相似文献
102.
Provocation of Atrial Fibrillation Triggers During Ablation: Does the Use of General Anesthesia Affect Inducibility?
下载免费PDF全文
![点击此处可从《Journal of cardiovascular electrophysiology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
103.
Changhyun Kim B.S. Brittany G. Craiglow M.D. Kalman L. Watsky M.D. Richard J. Antaya M.D. 《Pediatric dermatology》2015,32(4):e161-e162
A 17‐year‐old boy presented with recurring severe dermatitis of the face of 5‐months duration that resembled impetigo. He had been treated with several courses of antibiotics without improvement. Biopsy showed changes consistent with allergic contact dermatitis and patch testing later revealed sensitization to benzoyl peroxide, which the patient had been using for the treatment of acne vulgaris. 相似文献
104.
105.
Maaike van Gerwen MD Naomi Alpert MS Raja Flores MD Emanuela Taioli MD PhD 《American journal of industrial medicine》2020,63(2):115-120
The association between asbestos exposure, mainly in occupational settings, and malignant mesothelioma has been well established; this has prompted several countries to establish mesothelioma epidemiologic surveillance programs often at the request of national agencies. This review compares currently existing mesothelioma registries worldwide to develop a concept model for a US real-time case capture mesothelioma registry. Five countries were identified with a mesothelioma specific registry, including Italy, France, UK, Australia, and South Korea. All, except the UK, used interviews to collect exposure data. Linkage with the national death index was available or was in future plans for all registries. The registries have limited information on treatment, quality of life, and other patient-centered outcomes such as symptoms and pain management. To thoroughly collect exposure data, “real-time” enrollment is preferable; to maximize the capture of mesothelioma cases, optimal coverage, and a simplified consent process are needed. 相似文献
106.
Assessment of Myocardial Infarct Size by Three‐Dimensional and Two‐Dimensional Speckle Tracking Echocardiography: A Comparative Study to Single Photon Emission Computed Tomography
下载免费PDF全文
![点击此处可从《Echocardiography (Mount Kisco, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
107.
108.
109.
110.