全文获取类型
| 收费全文 | 23738篇 |
| 免费 | 1925篇 |
| 国内免费 | 96篇 |
专业分类
| 耳鼻咽喉 | 230篇 |
| 儿科学 | 685篇 |
| 妇产科学 | 480篇 |
| 基础医学 | 3487篇 |
| 口腔科学 | 603篇 |
| 临床医学 | 2168篇 |
| 内科学 | 4890篇 |
| 皮肤病学 | 568篇 |
| 神经病学 | 2491篇 |
| 特种医学 | 781篇 |
| 外科学 | 1921篇 |
| 综合类 | 124篇 |
| 一般理论 | 13篇 |
| 预防医学 | 3718篇 |
| 眼科学 | 451篇 |
| 药学 | 1355篇 |
| 中国医学 | 78篇 |
| 肿瘤学 | 1716篇 |
出版年
| 2023年 | 222篇 |
| 2022年 | 210篇 |
| 2021年 | 708篇 |
| 2020年 | 559篇 |
| 2019年 | 690篇 |
| 2018年 | 805篇 |
| 2017年 | 637篇 |
| 2016年 | 735篇 |
| 2015年 | 841篇 |
| 2014年 | 976篇 |
| 2013年 | 1272篇 |
| 2012年 | 1810篇 |
| 2011年 | 1934篇 |
| 2010年 | 1121篇 |
| 2009年 | 1041篇 |
| 2008年 | 1550篇 |
| 2007年 | 1544篇 |
| 2006年 | 1478篇 |
| 2005年 | 1364篇 |
| 2004年 | 1263篇 |
| 2003年 | 1126篇 |
| 2002年 | 1034篇 |
| 2001年 | 210篇 |
| 2000年 | 144篇 |
| 1999年 | 274篇 |
| 1998年 | 338篇 |
| 1997年 | 351篇 |
| 1996年 | 298篇 |
| 1995年 | 218篇 |
| 1994年 | 123篇 |
| 1993年 | 174篇 |
| 1992年 | 57篇 |
| 1991年 | 42篇 |
| 1990年 | 52篇 |
| 1989年 | 63篇 |
| 1988年 | 55篇 |
| 1987年 | 51篇 |
| 1986年 | 45篇 |
| 1985年 | 36篇 |
| 1984年 | 25篇 |
| 1983年 | 39篇 |
| 1982年 | 30篇 |
| 1981年 | 27篇 |
| 1980年 | 26篇 |
| 1979年 | 20篇 |
| 1978年 | 15篇 |
| 1977年 | 17篇 |
| 1976年 | 20篇 |
| 1975年 | 14篇 |
| 1974年 | 11篇 |
排序方式： 共有10000条查询结果，搜索用时 859 毫秒
1.
Streibert Fridolin Bernhardt Claudia Simon Philipp Hilbert-Carius Peter Wrigge Hermann 《Der Anaesthesist》2023,72(1):57-62
Die Anaesthesiologie - Die Anlage einer Magensonde im OP oder auf einer Intensivstation (ITS) stellt eine alltäglich durchgeführte Prozedur dar. Obwohl die Sonde häufig durch... 相似文献
2.
María C. Lanuza-López Sandra G. Martínez-Garza Jesús F. Solórzano-Vázquez Daniela Paz-Cervantes Claudia González-Ortega Israel Maldonado-Rosas 《Gynecological endocrinology》2020,36(9):829-834
AbstractOocyte maturation defect is a challenging situation in the management of infertility, the etiology may be related to endocrine causes, protocols used in ovarian stimulation, oocyte intrinsic defects or procedures in embryology laboratory. We report three Mexican females in treatment for primary infertility with non-mature oocytes after ovary stimulation and oocyte capture in whom a genetic diagnosis of TUBB8-oocyte maturation defect was revealed by exome sequencing. Two couples achieved pregnancies though oocyte donation after establishing the genetic etiology. Our results expand the role of TUBB8-disorders in patients of non-Asian ethnicity. Oocyte maturation defects of monogenic origin are a growing group of disorders that endocrinologists and reproductive medicine specialists should be aware in order to provide referral to genetics for establish a correct and opportune diagnosis. 相似文献
3.
4.
5.
Alessia Scarselli Silvia Di Cesare Claudia Capponi Simona Cascioli Maria L. Romiti Gigliola Di Matteo Alessandra Simonetti Paolo Palma Andrea Finocchi Barbarella Lucarelli Rita M. Pinto Ippolita Rana Giuseppe Palumbo Maurizio Caniglia Paolo Rossi Rita Carsetti Caterina Cancrini Alessandro Aiuti 《Journal of clinical immunology》2015,35(4):373-383
6.
Paola Gilsanz Maria M. Corrada Claudia H. Kawas Elizabeth Rose Mayeda M. Maria Glymour Charles P. Quesenberry Catherine Lee Rachel A. Whitmer 《Alzheimer's & dementia》2019,15(4):497-505
Introduction
Little is known about dementia incidence in diverse populations of oldest-old, the age group with highest dementia incidence.Methods
Incident dementia diagnoses from 1/1/2010 to 9/30/2015 were abstracted from medical records for 2350 members of an integrated health care system in California (n = 1702 whites, n = 375 blacks, n = 105 Latinos, n = 168 Asians) aged ≥90 in 2010. We estimated race/ethnicity-specific age-adjusted dementia incidence rates and implemented Cox proportional hazards models and Fine and Gray competing risk of death models adjusted for demographics and comorbidities in midlife and late-life.Results
Dementia incidence rates (n = 771 cases) were lowest among Asians (89.9/1000 person-years), followed by whites (96.9/1000 person-years), Latinos (105.8/1000 person-years), and blacks (121.5/1000 person-years). Cox regression and competing risk models estimated 28% and 36% higher dementia risk for blacks versus whites adjusting for demographics and comorbidities.Discussion
Patterns of racial/ethnic disparities in dementia seen in younger older adults continue after the age of 90 years, though smaller in magnitude. 相似文献7.
8.
Antoine Lin Hlne Sudour‐Bonnange Virginie Languillat‐Fouquet Herv Brisse Sabine Irtan Arnauld Verschuur Sabine Sarnacki Estelle Thbaud Aurore Coulomb‐L'Hermine Anne Notz‐Carrre Jean Michon Marie‐Dominique Tabone Ccile Boulanger Isabelle Pellier Claire Freycon Georges Audry Frdrique Dijoud Magali Morelle Christophe Bergeron Claudia Pasqualini 《Pediatric blood & cancer》2020,67(6)
9.
Hanna Lee Mary K. Tan Andrew T. Yan Paul Angaran Paul Dorian Claudia Bucci Jean C. Gregoire Alan D. Bell Martin S. Green Peter L. Gross Allan Skanes Charles R. Kerr L. Brent Mitchell Jafna L. Cox Vidal Essebag Brett Heilbron Krishnan Ramanathan Carl Fournier Shaun G. Goodman 《The Canadian journal of cardiology》2019,35(2):160-168
Background
Physicians treating nonvalvular atrial fibrillation (AF) assess stroke and bleeding risks when deciding on anticoagulation. The agreement between empirical and physician-estimated risks is unclear. Furthermore, the association between patient and physician sex and anticoagulation decision-making is uncertain.Methods
We pooled data from 2 national primary care physician chart audit databases of patients with AF (Facilitating Review and Education to Optimize Stroke Prevention in Atrial Fibrillation and Coordinated National Network to Engage Physicians in the Care and Treatment of Patients with Atrial Fibrillation Chart Audit) with a combined 1035 physicians (133 female, 902 male) and 10,927 patients (4567 female and 6360 male).Results
Male physicians underestimated stroke risk in female patients and overestimated risk in male patients. Female physicians estimated stroke risk well in female patients but underestimated the risk in male patients. Risk of bleeding was underestimated in all. Despite differences in risk assessment by physician and patient sex, > 90% of patients received anticoagulation across all subgroups. There was modest agreement between physician estimated and calculated (ie, CHADS2 score) stroke risk: Kappa scores were 0.41 (0.35-0.47) for female physicians and 0.34 (0.32-0.36) for male physicians.Conclusions
Our study is the first to examine the association between patient and physician sex influences and stroke and bleeding risk estimation in AF. Although there were differences in agreement between physician estimated stroke risk and calculated CHADS2 scores, these differences were small and unlikely to affect clinical practice; further, despite any perceived differences in the accuracy of risk assessment by sex, most patients received anticoagulation. 相似文献10.