首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   6599篇
  免费   425篇
  国内免费   28篇
耳鼻咽喉   92篇
儿科学   92篇
妇产科学   151篇
基础医学   1174篇
口腔科学   826篇
临床医学   406篇
内科学   1153篇
皮肤病学   166篇
神经病学   569篇
特种医学   158篇
外科学   558篇
综合类   28篇
一般理论   1篇
预防医学   750篇
眼科学   66篇
药学   524篇
中国医学   62篇
肿瘤学   276篇
  2023年   57篇
  2022年   51篇
  2021年   216篇
  2020年   162篇
  2019年   214篇
  2018年   280篇
  2017年   185篇
  2016年   218篇
  2015年   236篇
  2014年   349篇
  2013年   375篇
  2012年   562篇
  2011年   650篇
  2010年   314篇
  2009年   229篇
  2008年   430篇
  2007年   435篇
  2006年   309篇
  2005年   335篇
  2004年   257篇
  2003年   235篇
  2002年   183篇
  2001年   118篇
  2000年   110篇
  1999年   105篇
  1998年   33篇
  1997年   30篇
  1996年   13篇
  1995年   17篇
  1994年   18篇
  1993年   17篇
  1992年   51篇
  1991年   35篇
  1990年   38篇
  1989年   22篇
  1988年   23篇
  1987年   10篇
  1986年   11篇
  1985年   13篇
  1984年   7篇
  1982年   9篇
  1981年   5篇
  1980年   7篇
  1979年   11篇
  1977年   4篇
  1974年   6篇
  1973年   7篇
  1971年   6篇
  1969年   5篇
  1965年   5篇
排序方式: 共有7052条查询结果,搜索用时 156 毫秒
1.
Clinical Oral Investigations - This overview analyzed the quality of the systematic reviews (SRs) available on treatments for molar-incisor hypomineralization (MIH). Six electronic databases were...  相似文献   
2.
The presence of dental abnormalities in the same individual may be related to syndromic cases and occur through associated systemic changes. Kabuki syndrome presents well‐defined systemic changes, but its clinical characteristics related to the oral cavity have not been fully explained. This study aimed to report the dental changes in a child diagnosed with Kabuki syndrome. A male brown patient aged 2 years and 7 months, accompanied by his mother to the dental visit, they main complaint was the presented of an additional tooth behind upper right central incisor. Anamnesis, intra‐ and extraoral examinations, and dental X‐rays were performed, revealing a talon cusp. Considering the dental clinical findings, the patient was referred to a medical geneticist who additionally requested cardiological and genetic examinations, which established the Kabuki syndrome. The caregivers were advised that the talon cusp would not cause any injury to the natural exfoliation of the tooth and that oral hygiene should be performed carefully. Abnormalities in the oral cavity and developmental delay may be associated with a potential undiagnosed syndrome. The medical evaluation becomes decisive for investigation, diagnosis, and final conduct of the case.  相似文献   
3.
4.
5.
6.
7.
Tropical regions receive a significant part of the traveling population. It is very important that health professionals are familiar with the main tropical skin diseases and able to advice patients appropriately. This article reviews the main tropical diseases of travelers, with an emphasis on diagnosis, management, and prevention. Among others, cutaneous larva migrans, myiasis, tungiasis, Chagas disease, Dengue fever, African trypanosomiasis, filariasis, and leishmaniasis are discussed. Increasing awareness among travelers and health care professionals can help reduce morbidity and mortality. Continued research on new drugs and vaccines is needed to reduce the risks of tropical diseases.  相似文献   
8.
9.
Background: Benign breast disease (BBD) is one of main breast cancer risk factors. Dysfunctions on p53 protein, which has a genome protective role, have been related to breast cancer developments. However, its role on BBD development is still unclear. Methods: A systematic review of literature was proceeded according to PRISMA-P guidelines. PubMed, BVS, MEDLINE and Scholar Google were used as databases, complemented by a manual search in articles references.  Articles searches were conducted from May to July 2019 and publications in English, Spanish and Portuguese were selected. P53 expression was set as outcome among women with BBD and were included only articles with good quality according STROBE tools. Data concerning p53 expression frequencies were independently extracted by two review authors, and eligible articles were synthesized. Results: From 12 studies selected for this review, the majority analyzed p53 expression in non-proliferative lesions and general p53 expressions ranged from 0 to 100%. P53 expression was more frequently observed in cases series studies (91.7%) and in studies conducted in Occidental Europe (41.7%). P53 expression was more frequent among tissues with fibrocystic disease (22.5%) and fibroadenoma (22.5%). Conclusion: When compared with all breast tissues types, benign breast disease corresponds to 34.39% of p53 expression. Second outcomes were not evaluated because the heterogeneity observed in selected studies. In addition, more studies considering ethnicity and benign breast disease classification should also be considered for further analysis.  相似文献   
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号