全文获取类型
收费全文 | 289908篇 |
免费 | 41606篇 |
国内免费 | 2779篇 |
专业分类
耳鼻咽喉 | 6902篇 |
儿科学 | 9233篇 |
妇产科学 | 4916篇 |
基础医学 | 21924篇 |
口腔科学 | 4481篇 |
临床医学 | 40823篇 |
内科学 | 75344篇 |
皮肤病学 | 9588篇 |
神经病学 | 28186篇 |
特种医学 | 11049篇 |
外国民族医学 | 5篇 |
外科学 | 60949篇 |
综合类 | 2590篇 |
现状与发展 | 73篇 |
一般理论 | 179篇 |
预防医学 | 20088篇 |
眼科学 | 6667篇 |
药学 | 10770篇 |
2篇 | |
中国医学 | 184篇 |
肿瘤学 | 20340篇 |
出版年
2023年 | 5249篇 |
2022年 | 2109篇 |
2021年 | 5311篇 |
2020年 | 7229篇 |
2019年 | 4390篇 |
2018年 | 9888篇 |
2017年 | 9158篇 |
2016年 | 10325篇 |
2015年 | 10873篇 |
2014年 | 18955篇 |
2013年 | 21225篇 |
2012年 | 14076篇 |
2011年 | 14679篇 |
2010年 | 15357篇 |
2009年 | 18772篇 |
2008年 | 14482篇 |
2007年 | 13447篇 |
2006年 | 15628篇 |
2005年 | 13347篇 |
2004年 | 12058篇 |
2003年 | 10857篇 |
2002年 | 10438篇 |
2001年 | 5350篇 |
2000年 | 4349篇 |
1999年 | 4788篇 |
1998年 | 5461篇 |
1997年 | 4921篇 |
1996年 | 4592篇 |
1995年 | 4390篇 |
1994年 | 2999篇 |
1993年 | 2634篇 |
1992年 | 2513篇 |
1991年 | 2435篇 |
1990年 | 2042篇 |
1989年 | 2094篇 |
1988年 | 1895篇 |
1987年 | 1661篇 |
1986年 | 1699篇 |
1985年 | 1640篇 |
1984年 | 1597篇 |
1983年 | 1575篇 |
1982年 | 1843篇 |
1981年 | 1621篇 |
1980年 | 1461篇 |
1979年 | 1021篇 |
1978年 | 1088篇 |
1977年 | 1087篇 |
1976年 | 826篇 |
1975年 | 820篇 |
1974年 | 767篇 |
排序方式: 共有10000条查询结果,搜索用时 93 毫秒
81.
Yolanda Carrascal PhD Gregorio Laguna PhD Miriam Blanco MD Bárbara Segura MD Iciar Martínez-Almeida MD 《Journal of cardiac surgery》2020,35(2):457-459
Gray platelet syndrome (GPS) is a rare (<1/1 000 000) and inherited platelet function disorder characterized by macrothrombocytopenia, α-granule deficiency, and hemorrhages. Bleeding intensity does not correlate with platelet count nor with functional test results. We hereby describe the perioperative bleeding prevention and management of a patient with GPS requiring multiple redo cardiac surgeries. 相似文献
82.
Femoral access‐related complications during percutaneous transcatheter aortic valve implantation comparing single versus double Prostar XL device closure
下载免费PDF全文
![点击此处可从《Catheterization and cardiovascular interventions》网站下载免费的PDF全文](/ch/ext_images/free.gif)
83.
Elizabeth A. Mosley PhD MPH Amy J. Schulz PhD MPH MSW Lisa H. Harris MD PhD Barbara A. Anderson PhD 《Women & health》2020,60(7):806-820
ABSTRACT Abortion is legal in South Africa, but negative abortion attitudes remain common and are poorly understood. We used nationally representative South African Social Attitudes Survey data to analyze abortion attitudes in the case of fetal anomaly and in the case of poverty from 2007 to 2016 (n = 20,711; ages = 16+). We measured correlations between abortion attitudes and these important predictors: religiosity, attitudes about premarital sex, attitudes about preferential hiring and promotion of women, and attitudes toward family gender roles. Abortion acceptability for poverty increased over time (b = 0.05, p < .001), but not for fetal anomaly (b = ?0.008, p = .284). Highly religious South Africans reported lower abortion acceptability in both cases (Odds Ratio (OR)anomaly = 0.85, p = .015; ORpoverty = 0.84, p = .02). Premarital sex acceptability strongly and positively predicted abortion acceptability (ORanomaly = 2.63, p < .001; ORpoverty = 2.46, p < .001). Attitudes about preferential hiring and promotion of women were not associated with abortion attitudes, but favorable attitudes about working mothers were positively associated with abortion acceptability for fetal anomaly ((ORanomaly = 1.09, p = .01; ORpoverty = 1.02, p = .641)). Results suggest negative abortion attitudes remain common in South Africa and are closely tied to religiosity, traditional ideologies about sexuality, and gender role expectations about motherhood. 相似文献
84.
85.
86.
87.
Worsening pneumonitis due to a pharmacokinetic drug–drug interaction between everolimus and voriconazole in a renal transplant patient
下载免费PDF全文
![点击此处可从《Journal of clinical pharmacy and therapeutics》网站下载免费的PDF全文](/ch/ext_images/free.gif)
88.
89.
Nickel Allergy and Our Children's Health: A Review of Indexed Cases and a View of Future Prevention
下载免费PDF全文
![点击此处可从《Pediatric dermatology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Sharon E. Jacob M.D. Alina Goldenberg M.D. M.A.S. Janice L. Pelletier M.D. Luz S. Fonacier M.D. Richard Usatine M.D. Nanette Silverberg M.D. 《Pediatric dermatology》2015,32(6):779-785
Nickel is the leading cause of allergic contact dermatitis (ACD) from early childhood through adolescence. Studies have shown that skin piercings and other nickel‐laden exposures can trigger the onset of nickel ACD in those who are susceptible. Nickel ACD causes a vast amount of cutaneous disease in children. Cases of nickel ACD in children have been reported in peer‐reviewed literature from 28 states. Common items that contain inciting nickel include jewelry, coins, zippers, belts, tools, toys, chair studs, cases for cell phones and tablets, and dental appliances. The diagnosis of nickel ACD has been routinely confirmed by patch testing in children older than 6 months suspected of ACD from nickel. Unlike in Europe, there are no mandatory restrictions legislated for nickel exposure in the United States. Denmark has demonstrated that regulation of the nickel content in metals can lower the risk of ACD and the associated health care–related costs that arise from excess nickel exposure. To further awareness, this article reviews the prominent role of nickel in pediatric skin disease in the United States. It discusses the need for a campaign by caretakers to reduce nickel‐related morbidity. Lastly, it promotes the model of European legislation as a successful intervention in the prevention of nickel ACD. 相似文献
90.