全文获取类型
收费全文 | 16788篇 |
免费 | 1426篇 |
国内免费 | 40篇 |
专业分类
耳鼻咽喉 | 162篇 |
儿科学 | 607篇 |
妇产科学 | 567篇 |
基础医学 | 2204篇 |
口腔科学 | 190篇 |
临床医学 | 2236篇 |
内科学 | 3003篇 |
皮肤病学 | 252篇 |
神经病学 | 1582篇 |
特种医学 | 512篇 |
外科学 | 2075篇 |
综合类 | 199篇 |
一般理论 | 11篇 |
预防医学 | 1934篇 |
眼科学 | 264篇 |
药学 | 1322篇 |
中国医学 | 10篇 |
肿瘤学 | 1124篇 |
出版年
2023年 | 128篇 |
2022年 | 196篇 |
2021年 | 418篇 |
2020年 | 233篇 |
2019年 | 409篇 |
2018年 | 461篇 |
2017年 | 340篇 |
2016年 | 380篇 |
2015年 | 385篇 |
2014年 | 559篇 |
2013年 | 818篇 |
2012年 | 1271篇 |
2011年 | 1253篇 |
2010年 | 658篇 |
2009年 | 562篇 |
2008年 | 1039篇 |
2007年 | 1040篇 |
2006年 | 941篇 |
2005年 | 937篇 |
2004年 | 890篇 |
2003年 | 751篇 |
2002年 | 715篇 |
2001年 | 329篇 |
2000年 | 315篇 |
1999年 | 264篇 |
1998年 | 155篇 |
1997年 | 137篇 |
1996年 | 113篇 |
1995年 | 85篇 |
1994年 | 94篇 |
1993年 | 91篇 |
1992年 | 198篇 |
1991年 | 163篇 |
1990年 | 180篇 |
1989年 | 152篇 |
1988年 | 138篇 |
1987年 | 130篇 |
1986年 | 116篇 |
1985年 | 115篇 |
1984年 | 78篇 |
1983年 | 82篇 |
1982年 | 42篇 |
1981年 | 58篇 |
1979年 | 76篇 |
1978年 | 68篇 |
1977年 | 48篇 |
1974年 | 52篇 |
1973年 | 81篇 |
1972年 | 69篇 |
1970年 | 42篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
5.
6.
Eloise R. Galligan Leila H. Shayegan Christine T. Lauren Kimberly D. Morel 《Pediatric dermatology》2019,36(5):753-754
Shaving and other modes of epilation can cause undue anxiety, pain, or skin irritation in children. Here, we present hair trimming as a safe, painless, and cost‐effective alternative for patients with unwanted hair which may be performed indefinitely or until the child is old enough to direct management. In select cases, removing unwanted hair using this technique may facilitate dermatologic surveillance. 相似文献
7.
8.
Clinical Spectrum of Capillary Malformation–Arteriovenous Malformation Syndrome Presenting to a Pediatric Dermatology Practice: A Retrospective Study
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)
Nicole A. Weitz M.D. Christine T. Lauren M.D. Gerald G. Behr M.D. June K. Wu M.D. Jessica J. Kandel M.D. Philip M. Meyers M.D. Sally Sultan M.D. Kwame Anyane‐Yeboa M.D. Kimberly D. Morel M.D. Maria C. Garzon M.D. 《Pediatric dermatology》2015,32(1):76-84
Capillary malformation–arteriovenous malformation syndrome (CM‐AVM) is an autosomal dominant disorder caused by RASA1 mutations. The prevalence and phenotypic spectrum are unknown. Evaluation of patients with multiple CMs is challenging because associated AVMs can be life threatening. The objective of this study was to describe the clinical characteristics of children presenting with features of CM‐AVM to an academic pediatric dermatology practice. After institutional review board approval was received, a retrospective chart review was performed of patients presenting between 2009 and 2012 with features of CM‐AVM. We report nine cases. Presenting symptoms ranged from extensive vascular stains and cardiac failure to CMs noted incidentally during routine skin examination. All demonstrated multiple CMs, two had Parkes Weber syndrome, and two had multiple infantile hemangiomas. Seven patients had family histories of multiple CMs; three had family histories of large, atypical CMs. Six had personal or family histories of AVMs. Genetic evaluation was recommended for all and was pursued by six families; four RASA1 mutations were identified, including one de novo. Consultations with neurology, cardiology, and orthopedics were recommended. Most patients (89%) have not required treatment to date. CM‐AVM is an underrecognized condition with a wide clinical spectrum that often presents in childhood. Further evaluation may be indicated in patients with multiple CMs. This study is limited by its small and retrospective nature. 相似文献
9.
10.
Aurora Perez-Cornago Georgina K. Fensom Colm Andrews Eleanor L. Watts Naomi E. Allen Richard M. Martin Mieke Van Hemelrijck Timothy J. Key Ruth C. Travis 《British journal of cancer》2020,123(12):1808
Background Although prostate cancer is a leading cause of cancer death, its aetiology is not well understood. We aimed to identify novel biochemical factors for prostate cancer incidence and mortality in UK Biobank.Methods A range of cardiovascular, bone, joint, diabetes, renal and liver-related biomarkers were measured in baseline blood samples collected from up to 211,754 men at recruitment and in a subsample 5 years later. Participants were followed-up via linkage to health administrative datasets to identify prostate cancer cases. Hazard ratios (HRs) and 95% confidence intervals were calculated using multivariable-adjusted Cox regression corrected for regression dilution bias. Multiple testing was accounted for by using a false discovery rate controlling procedure.Results After an average follow-up of 6.9 years, 5763 prostate cancer cases and 331 prostate cancer deaths were ascertained. Prostate cancer incidence was positively associated with circulating vitamin D, urea and phosphate concentrations and inversely associated with glucose, total protein and aspartate aminotransferase. Phosphate and cystatin-C were the only biomarkers positively and inversely, respectively, associated with risk in analyses excluding the first 4 years of follow-up. There was little evidence of associations with prostate cancer death.Conclusion We found novel associations of several biomarkers with prostate cancer incidence. Future research will examine associations by tumour characteristics.Subject terms: Predictive markers, Prostate cancer, Risk factors 相似文献