全文获取类型
收费全文 | 757篇 |
免费 | 71篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 19篇 |
妇产科学 | 5篇 |
基础医学 | 331篇 |
口腔科学 | 2篇 |
临床医学 | 37篇 |
内科学 | 111篇 |
皮肤病学 | 2篇 |
神经病学 | 105篇 |
特种医学 | 38篇 |
外科学 | 107篇 |
综合类 | 2篇 |
预防医学 | 18篇 |
眼科学 | 3篇 |
药学 | 21篇 |
肿瘤学 | 28篇 |
出版年
2023年 | 2篇 |
2022年 | 8篇 |
2021年 | 10篇 |
2020年 | 11篇 |
2019年 | 17篇 |
2018年 | 14篇 |
2017年 | 24篇 |
2016年 | 28篇 |
2015年 | 32篇 |
2014年 | 53篇 |
2013年 | 48篇 |
2012年 | 72篇 |
2011年 | 66篇 |
2010年 | 40篇 |
2009年 | 46篇 |
2008年 | 90篇 |
2007年 | 77篇 |
2006年 | 62篇 |
2005年 | 26篇 |
2004年 | 23篇 |
2003年 | 18篇 |
2002年 | 19篇 |
2001年 | 13篇 |
2000年 | 4篇 |
1999年 | 6篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 3篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 3篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 1篇 |
排序方式: 共有830条查询结果,搜索用时 140 毫秒
81.
82.
83.
R. Shane Tubbs Mitchel Muhleman Marios Loukas Aaron A. Cohen-Gadol 《Child's nervous system》2012,28(3):345-348
Introduction
Malfunction of cerebrospinal shunts is common and is due to multiple etiologies ranging from obstruction due to infiltrated brain tissue to mechanical disconnection. 相似文献84.
85.
R. Shane Tubbs Michael J. Lyerly Marios Loukas Mohammadali M. Shoja W. Jerry Oakes 《Child's nervous system》2007,23(11):1239-1250
Background Both the diagnosis and treatment regimens for the Chiari I malformation (CIM) are varied and controversial. The present paper
analyzes the literature regarding this form of hindbrain herniation in regard to definition, anatomy, pathobiology, symptoms,
findings, treatment, and outcomes.
Discussions Appropriate literature germane to the CIM is reviewed and discussed. There is variation in the reported anatomy, outcome,
and treatment for children with CIM. Based on the literature, most patients have preoperative symptoms or findings (e.g.,
syringomyelia) improve no matter what surgical technique is utilized. However, standardized treatment paradigms based on randomized
controlled studies are still necessary to elucidate the optimal selection and treatment criteria. 相似文献
86.
R. Shane Tubbs Matthew Bailey William C. Barrow Marios Loukas Mohammadali M. Shoja W. Jerry Oakes 《Child's nervous system》2009,25(6):689-692
Introduction Although very uncommon, Chiari I malformation (CIM) with syringomyelia may be associated with concomitant syringobulbia. We
hypothesized that the anatomy of the craniocervical region may be different in CIM patients with syringomyelia who develop
syringobulbia in conjunction with their syringomyelia compared to other patients with CIM with and without syringomyelia.
The present study was conducted in order to prove or disprove such a theory.
Materials and methods A group of 189 children with operated CIM were reviewed for the presence of syringobulbia, and this cohort then underwent
morphometric analyses of their craniocervical juncture. These measurements were then compared to both our prior patient findings
and historic controls.
Results The current study did not identify any morphometrical peculiarities for patients with CIM and syringobulbia compared to other
CIM patients with and without isolated syringomyelia.
Conclusions Based on our study, the mechanism behind such cerebrospinal fluid distention into the brain stem remains elusive with no single
morphometrical difference in patients with CIM and syringobulbia compared to other patients with CIM. Perhaps, future testing
aimed at identifying pressure gradients across the foramen magnum in patients with and without syringobulbia and concomitant
CIM may be useful. 相似文献
87.
88.
89.
Bartels I Starke H Argyriou L Sauter SM Zoll B Liehr T 《European journal of medical genetics》2007,50(2):133-138
A 27-year-old man was referred for chromosome analysis due to infertility caused by azoospermia. Chromosome analysis by conventional karyotyping, multicolour FISH (M-FISH) and multicolour banding (MCB) analysis revealed an apparently balanced translocation between chromosomes 1, 3, 9 and 14 as well as an additional inverted insertion of 3q material with a total of eight breakpoints. Due to the diversity of theoretically unbalanced products of meiotic recombination in this exceptional complex chromosomal rearrangement a successful result of assisted reproduction seems unlikely. 相似文献