全文获取类型
收费全文 | 1900315篇 |
免费 | 151689篇 |
国内免费 | 7180篇 |
专业分类
耳鼻咽喉 | 24354篇 |
儿科学 | 61910篇 |
妇产科学 | 50776篇 |
基础医学 | 271916篇 |
口腔科学 | 53006篇 |
临床医学 | 171926篇 |
内科学 | 381783篇 |
皮肤病学 | 44851篇 |
神经病学 | 149398篇 |
特种医学 | 75775篇 |
外国民族医学 | 346篇 |
外科学 | 293254篇 |
综合类 | 43649篇 |
现状与发展 | 4篇 |
一般理论 | 555篇 |
预防医学 | 148674篇 |
眼科学 | 41841篇 |
药学 | 137363篇 |
8篇 | |
中国医学 | 4277篇 |
肿瘤学 | 103518篇 |
出版年
2018年 | 19542篇 |
2016年 | 17995篇 |
2015年 | 20037篇 |
2014年 | 27814篇 |
2013年 | 41878篇 |
2012年 | 52456篇 |
2011年 | 55976篇 |
2010年 | 34425篇 |
2009年 | 33295篇 |
2008年 | 52308篇 |
2007年 | 55910篇 |
2006年 | 57138篇 |
2005年 | 54704篇 |
2004年 | 52784篇 |
2003年 | 50881篇 |
2002年 | 48720篇 |
2001年 | 93614篇 |
2000年 | 95927篇 |
1999年 | 79825篇 |
1998年 | 22886篇 |
1997年 | 20178篇 |
1996年 | 21167篇 |
1995年 | 21076篇 |
1994年 | 19643篇 |
1993年 | 18284篇 |
1992年 | 65008篇 |
1991年 | 63682篇 |
1990年 | 61561篇 |
1989年 | 59349篇 |
1988年 | 54725篇 |
1987年 | 53593篇 |
1986年 | 50633篇 |
1985年 | 48446篇 |
1984年 | 36500篇 |
1983年 | 30763篇 |
1982年 | 18525篇 |
1981年 | 16649篇 |
1980年 | 15748篇 |
1979年 | 32978篇 |
1978年 | 23701篇 |
1977年 | 20015篇 |
1976年 | 18646篇 |
1975年 | 19809篇 |
1974年 | 23265篇 |
1973年 | 22240篇 |
1972年 | 20674篇 |
1971年 | 19114篇 |
1970年 | 17752篇 |
1969年 | 16538篇 |
1968年 | 15351篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
Neurofibromatosis Type 1 Diagnosed in a Child Based on Multiple Juvenile Xanthogranulomas and Juvenile Myelomonocytic Leukemia 下载免费PDF全文
Sune R. R. Jans M.D. Eckhard Schomerus M.D. Anette Bygum M.D. 《Pediatric dermatology》2015,32(1):e29-e32
An association between juvenile xanthogranuloma (JXG), neurofibromatosis type 1 (NF1), and juvenile myelomonocytic leukemia (JMML) has been described in the literature but has only been documented in approximately 20 cases. We diagnosed a patient with NF1 at 25 months of age, before any cutaneous stigmata of this disease had appeared, because we decided to screen for the NF1 gene mutation because of his presentation with multiple JXGs and moderate macrocephaly (2.5 standard deviations) at 9 months of age and JMML diagnosed at 20 months of age. The child is well today after treatment with chemotherapy and allogenic bone marrow transplantation. With increased awareness, patients with JXG and NF1 who develop symptoms possibly related to JMML, such as paleness, skin bleeding, cough, unexplained fever, and hepatosplenomegaly, should be further evaluated. We also emphasize that multiple JXG lesions can be an early marker of NF1. 相似文献
142.
A novel BRAF mutation in association with primary amelanotic melanoma with oral metastases 下载免费PDF全文
143.
144.
145.
146.
147.
148.
149.
Qianlai Luo Jonathan N. Hofmann Ruth M. Pfeiffer Cari M. Kitahara Minkyo Song Meredith S. Shiels 《International journal of cancer. Journal international du cancer》2023,153(1):64-72
In the United States, renal cell carcinoma (RCC) incidence and the prevalence of obesity, an established risk factor for RCC, have been increasing for several decades. RCC is more common among older individuals. We sought to quantify the contribution of excess adiposity to the rising incidence of RCC among individuals 60 years or older. National Institutes of Health-American Association of Retired Persons Diet and Health Study data (n = 453 859 participants, enrolled in 1995-1996, age at enrollment 50-71 years) were used to estimate multivariable-adjusted hazard ratios (HRs) for RCC across body mass index categories and HRs associated with smoking. Population attributable fractions (PAFs) were calculated using estimated HRs and annual overweight/obesity prevalence from the National Health Interview Survey (1985-2008). PAF estimates were combined with RCC incidence from Surveillance, Epidemiology and End Results-13 to calculate annual percent changes in RCC incidence attributable (and unrelated) to overweight/obesity. We found that between 1995 and 2018, among individuals aged 60 years and older, PAF for overweight/obesity increased from 18% to 29% for all RCCs. In comparison, the PAF for smoking declined from 12% to 9%. RCC incidence increased 1.8% per year (95% confidence interval [CI] 1.5%-2.1%) overall, while RCC incidence attributable to overweight/obesity increased 3.8% per year (95%CI 3.5%-4.2%) and RCC incidence unrelated to overweight/obesity increased 1.2% per year (95% CI 0.9%-1.4%). In conclusion, overweight/obesity appears to have contributed importantly to the rising incidence of RCC in the United States since the mid-1990s. Public health interventions focused on reducing overweight and obesity could help substantially in curbing this trend. 相似文献
150.
Turnbull Chris D. Stockley James A. Madathil Shyam Huq Syed S. A. Cooper Brendan G. Ali Asad Wharton Simon Stradling John R. Heitmar Rebekka 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》2022,260(7):2129-2139
Graefe's Archive for Clinical and Experimental Ophthalmology - Retinal microvascular endothelial dysfunction is thought to be of importance in the development of ocular vascular diseases.... 相似文献