全文获取类型
收费全文 | 7183篇 |
免费 | 495篇 |
国内免费 | 19篇 |
专业分类
耳鼻咽喉 | 75篇 |
儿科学 | 372篇 |
妇产科学 | 91篇 |
基础医学 | 789篇 |
口腔科学 | 146篇 |
临床医学 | 678篇 |
内科学 | 1542篇 |
皮肤病学 | 135篇 |
神经病学 | 616篇 |
特种医学 | 190篇 |
外科学 | 1445篇 |
综合类 | 147篇 |
一般理论 | 3篇 |
预防医学 | 342篇 |
眼科学 | 254篇 |
药学 | 379篇 |
中国医学 | 18篇 |
肿瘤学 | 475篇 |
出版年
2023年 | 65篇 |
2022年 | 92篇 |
2021年 | 221篇 |
2020年 | 134篇 |
2019年 | 183篇 |
2018年 | 240篇 |
2017年 | 153篇 |
2016年 | 172篇 |
2015年 | 172篇 |
2014年 | 265篇 |
2013年 | 312篇 |
2012年 | 518篇 |
2011年 | 565篇 |
2010年 | 282篇 |
2009年 | 279篇 |
2008年 | 415篇 |
2007年 | 389篇 |
2006年 | 379篇 |
2005年 | 319篇 |
2004年 | 314篇 |
2003年 | 310篇 |
2002年 | 282篇 |
2001年 | 148篇 |
2000年 | 147篇 |
1999年 | 143篇 |
1998年 | 58篇 |
1997年 | 51篇 |
1996年 | 47篇 |
1995年 | 31篇 |
1994年 | 36篇 |
1993年 | 38篇 |
1992年 | 84篇 |
1991年 | 72篇 |
1990年 | 60篇 |
1989年 | 52篇 |
1988年 | 50篇 |
1987年 | 41篇 |
1986年 | 45篇 |
1985年 | 57篇 |
1984年 | 43篇 |
1983年 | 36篇 |
1982年 | 27篇 |
1981年 | 26篇 |
1980年 | 24篇 |
1979年 | 38篇 |
1978年 | 26篇 |
1977年 | 24篇 |
1974年 | 34篇 |
1971年 | 22篇 |
1970年 | 23篇 |
排序方式: 共有7697条查询结果,搜索用时 31 毫秒
101.
102.
103.
Raghad M. Al-Abdwani Faryal A. Khamis Abdullah Balkhair Mathew Sacharia Yasser A. Wali 《Pediatric hematology and oncology》2013,30(7):699-703
Human parvovirus B19 (HPV B19) infections are usually asymptomatic or benign and self-limiting. In immunocompromised patients and patients with chronic hemolytic anemia, it can lead to transient red cell aplasia. Few reports in the literature have implicated HPV B19 as the possible cause of acute hepatitis and severe aplastic anemia in immunocompetent patients. Here, the authors report a previously healthy 6-year-old girl with acute hepatitis and severe aplastic anemia associated with HPV B19 infection diagnosed by serology (ELISA). Other common causes of these manifestations were ruled out. The clinical manifestations subsequently improved significantly with the use of immunosuppressive therapy confirming an autoimmune mechanism. 相似文献
104.
Lazar Jelev 《Clinical anatomy (New York, N.Y.)》2013,26(8):961-965
Ansa cervicalis (ansa hypoglossi) is a peripheral nerve structure—the primary choice for laryngeal reinnervation. Because the ansa formation is quite variable in humans, it is an object of a number of proposed classifications. Two interesting cases of formation of the ansa cervicalis were found during routine anatomical dissections. In the first case the unusual ansa had three basic roots—a superior one from the hypoglossal nerve, an aberrant middle root from the vagus nerve and an inferior root, coming from the cervical ventral branches. In the second case an ansa was described having roots from the vagus nerve and cervical ventral branches. Based on the reported variations and extensive review of the pertinent literature, a new morphological classification of the ansa cervicalis formation in human is proposed here. Clin. Anat. 26:961–965, 2013. © 2013 Wiley Periodicals, Inc. 相似文献
105.
106.
Avvaru Satya Kiran Ajoy Mathew Varghese Aparna Irodi Anjali Lepcha John Mathew Visalakshi Jeyaseelan 《Indian journal of otolaryngology and head and neck surgery》2018,70(1):1-9
To test whether there are variations in cochlear orientation with respect to age and sex, and its relevance in cochlear implant surgery. Implant otologists rely upon the anatomic landmarks including the facial recess and round window niche and round window membrane for accessibility and placement of electrode array into scala tympani of basal turn of cochlea. Anecdotally, surgeons note variations in cochlear orientation with respect to age. Cochlear orientation studied radiologically by pre-operative CT scan of temporal bone can guide a Surgeon’s approach to cochlear implantation. To investigate the changes in cochlear orientation with respect to age and sex; and its relevance in cochlear implantation. A retrospective analytical study was performed on CT scans of temporal bones in patients (of our hospital from July 2013 to January 2015 i.e. for a period of 18 months) with no congenital or radiological abnormalities of cochlea. The basal turn angulations of cochlea varied with age and majority of change occurred during early age. The basal turn angulations of cochlea in difficult situations during cochlear implantation were correlated with the data. There is a significant variation in cochlear orientation as measured radiologically by basal turn angulations relative to midsagittal plane. The more obtuse and acute basal turn angulations have implications like difficulty in cochleostomy and electrode placement during cochlear implantation. 相似文献
107.
108.
Paul G. Mathew 《Current pain and headache reports》2016,20(5):32
Primary and secondary headache disorders have established diagnostic criteria in the International Classification of Headache Disorders IIIb, as well as classic findings, which although not part of the formal criteria are often suggestive of a particular diagnosis. At times, headache disorders can involve unusual symptoms that lack an identifiable secondary cause. This review will discuss some of these unusual symptoms, including headache associated auditory and olfactory symptoms, as well as two case reports involving gelastic migraine and migrainous thoracalgia. 相似文献
109.
110.