全文获取类型
收费全文 | 8701篇 |
免费 | 595篇 |
国内免费 | 155篇 |
专业分类
耳鼻咽喉 | 117篇 |
儿科学 | 150篇 |
妇产科学 | 108篇 |
基础医学 | 1290篇 |
口腔科学 | 188篇 |
临床医学 | 729篇 |
内科学 | 1803篇 |
皮肤病学 | 202篇 |
神经病学 | 580篇 |
特种医学 | 582篇 |
外国民族医学 | 2篇 |
外科学 | 1287篇 |
综合类 | 148篇 |
预防医学 | 558篇 |
眼科学 | 211篇 |
药学 | 759篇 |
1篇 | |
中国医学 | 143篇 |
肿瘤学 | 593篇 |
出版年
2023年 | 58篇 |
2022年 | 54篇 |
2021年 | 323篇 |
2020年 | 189篇 |
2019年 | 274篇 |
2018年 | 277篇 |
2017年 | 207篇 |
2016年 | 324篇 |
2015年 | 410篇 |
2014年 | 504篇 |
2013年 | 561篇 |
2012年 | 885篇 |
2011年 | 772篇 |
2010年 | 388篇 |
2009年 | 359篇 |
2008年 | 544篇 |
2007年 | 428篇 |
2006年 | 429篇 |
2005年 | 354篇 |
2004年 | 337篇 |
2003年 | 332篇 |
2002年 | 261篇 |
2001年 | 175篇 |
2000年 | 163篇 |
1999年 | 148篇 |
1998年 | 74篇 |
1997年 | 48篇 |
1996年 | 44篇 |
1995年 | 38篇 |
1994年 | 23篇 |
1993年 | 25篇 |
1992年 | 32篇 |
1991年 | 42篇 |
1990年 | 25篇 |
1989年 | 28篇 |
1988年 | 30篇 |
1987年 | 25篇 |
1986年 | 26篇 |
1985年 | 26篇 |
1984年 | 17篇 |
1983年 | 21篇 |
1982年 | 15篇 |
1981年 | 12篇 |
1980年 | 12篇 |
1979年 | 17篇 |
1978年 | 11篇 |
1976年 | 10篇 |
1974年 | 9篇 |
1970年 | 12篇 |
1968年 | 9篇 |
排序方式: 共有9451条查询结果,搜索用时 15 毫秒
1.
Ha Audrey Y. Do Bao H. Bartret Adam L. Fang Charles X. Hsiao Albert Lutz Amelie M. Banerjee Imon Riley Geoffrey M. Rubin Daniel L. Stevens Kathryn J. Wang Erin Wang Shannon Beaulieu Christopher F. Hurt Brian 《Journal of digital imaging》2022,35(3):524-533
Journal of Digital Imaging - Scoliosis is a condition of abnormal lateral spinal curvature affecting an estimated 2 to 3% of the US population, or seven million people. The Cobb angle is the... 相似文献
2.
Seulbi Lee Hyesook Park Soontae Kim Eun-Kyung Lee Jiyoung Lee Young Sun Hong Eunhee Ha 《International journal of hygiene and environmental health》2019,222(3):533-540
Background
It has been reported that particulate matter (PM) is associated with cardiovascular diseases (CVD) while metabolic syndrome is also an important risk factor for CVD. However, few studies have investigated the epidemiological association between PM and metabolic syndrome.Objective
To investigate the association between one-year exposure to PM with an aerodynamic diameter <2.5?μm (PM2.5) and the risk of metabolic syndrome in Korean adults without CVD.Methods
Exposure to PM2.5 was assessed using a Community Multiscale Air Quality (CMAQ) model. Metabolic syndrome was defined by National Cholesterol Education Program Adult Treatment Panel III. Andersen and Gill model with time-varying covariates, considering recurrent events, was used to investigate the association between one-year average PM2.5 and the risk of incident metabolic syndrome in 119,998 adults from the national health screening cohort provided by Korea National Health Insurance from 2009 to 2013.Results
Higher risk of metabolic syndrome, waist-based obesity, hypertension, hypertriglyceridemia, low HDL cholesterol, and hyperglycemia were significantly associated with a 10-μg/m3 increase in PM2.5 [adjusted hazard ratio (HR): 1.070, 1.510, 1.499, 1.468, 1.627 and 1.380, respectively]. In addition, the risk of metabolic syndrome associated with PM2.5 exposure was significant in the consistently obese group (obese at baseline and endpoint).Conclusion
Exposure to one-year average PM2.5 is associated with an increased risk of metabolic syndrome and its components in adults without CVD. These associations are particularly prominent in the consistently obese group (obese at baseline and endpoint). Our findings indicate that PM2.5 affects the onset of MS and its components which may lead to increase the risk of CVD. 相似文献3.
Zumel-Marne Angela Kundi Michael Castaño-Vinyals Gemma Alguacil Juan Petridou Eleni Th Georgakis Marios K. Morales-Suárez-Varela Maria Sadetzki Siegal Piro Sara Nagrani Rajini Filippini Graziella Hutter Hans-Peter Dikshit Rajesh Woehrer Adelheid Maule Milena Weinmann Tobias Krewski Daniel ′t Mannetje Andrea Momoli Franco Lacour Brigitte Mattioli Stefano Spinelli John J. Ritvo Paul Remen Thomas Kojimahara Noriko Eng Amanda Thurston Angela Lim Hyungryul Ha Mina Yamaguchi Naohito Mohipp Charmaine Bouka Evdoxia Eastman Chelsea Vermeulen Roel Kromhout Hans Cardis Elisabeth 《Journal of neuro-oncology》2020,147(2):427-440
Journal of Neuro-Oncology - We used data from MOBI-Kids, a 14-country international collaborative case–control study of brain tumors (BTs), to study clinical characteristics of the tumors in... 相似文献
4.
Byung-Ho Yoon Lynne C. Jones Chung-Hwan Chen Edward Y. Cheng Quanjun Cui Wolf Drescher Wakaba Fukushima Valerie Gangji Stuart B. Goodman Yong-Chan Ha Philippe Hernigou Marc Hungerford Richard Iorio Woo-Lam Jo Vikas Khanduja Harry Kim Shin-Yoon Kim Tae-Young Kim Kyung-Hoi Koo 《The Journal of arthroplasty》2019,34(1):169-174.e1
Background
Although alcohol is a leading risk factor for osteonecrosis of the femoral head (ONFH) and its prevalence reportedly ranges from 20% to 45%, there are no unified classification criteria for this subpopulation. In 2015, Association Research Circulation Osseous decided to develop classification criteria for alcohol-associated ONFH.Methods
In June of 2017, Association Research Circulation Osseous formed a task force to conduct a Delphi survey. The task force invited 28 experts in osteonecrosis/bone circulation from 8 countries. Each round of the Delphi survey included questionnaires, analysis of replies, and feedback reports to the panel. After 3 rounds of the survey, consensus was reached on the classification criteria. The response rates for the 3 Delphi rounds were 100% (round 1), 96% (round 2), and 100% (round 3).Results
The consensus on the classification criteria of alcohol-associated ONFH included the following: (1) patients should have a history of alcohol intake >400 mL/wk (320 g/wk, any type of alcoholic beverage) of pure ethanol for more than 6 months; (2) ONFH should be diagnosed within 1 year after alcohol intake of this dose; and (3) patients should not have other risk factor(s).Conclusion
ARCO-established classification criteria to standardize clinical studies concerning AA-ONFH. 相似文献5.
6.
7.
8.
9.
10.
Lesley A. Inker Morgan E. Grams Andrew S. Levey Josef Coresh Massimo Cirillo John F. Collins Ron T. Gansevoort Orlando M. Gutierrez Takayuki Hamano Gunnar H. Heine Shizukiyo Ishikawa Sun Ha Jee Florian Kronenberg Martin J. Landray Katsuyuki Miura Girish N. Nadkarni Carmen A. Peralta Dietrich Rothenbacher Mark Woodward 《American journal of kidney diseases》2019,73(2):206-217