全文获取类型
收费全文 | 10405篇 |
免费 | 621篇 |
国内免费 | 84篇 |
专业分类
耳鼻咽喉 | 127篇 |
儿科学 | 278篇 |
妇产科学 | 336篇 |
基础医学 | 1242篇 |
口腔科学 | 277篇 |
临床医学 | 896篇 |
内科学 | 2387篇 |
皮肤病学 | 184篇 |
神经病学 | 443篇 |
特种医学 | 327篇 |
外国民族医学 | 1篇 |
外科学 | 1504篇 |
综合类 | 308篇 |
一般理论 | 7篇 |
预防医学 | 725篇 |
眼科学 | 349篇 |
药学 | 981篇 |
中国医学 | 105篇 |
肿瘤学 | 633篇 |
出版年
2023年 | 138篇 |
2022年 | 346篇 |
2021年 | 467篇 |
2020年 | 309篇 |
2019年 | 403篇 |
2018年 | 441篇 |
2017年 | 317篇 |
2016年 | 310篇 |
2015年 | 281篇 |
2014年 | 437篇 |
2013年 | 545篇 |
2012年 | 772篇 |
2011年 | 788篇 |
2010年 | 457篇 |
2009年 | 362篇 |
2008年 | 573篇 |
2007年 | 583篇 |
2006年 | 478篇 |
2005年 | 448篇 |
2004年 | 400篇 |
2003年 | 330篇 |
2002年 | 299篇 |
2001年 | 153篇 |
2000年 | 136篇 |
1999年 | 143篇 |
1998年 | 66篇 |
1997年 | 42篇 |
1996年 | 48篇 |
1995年 | 48篇 |
1994年 | 50篇 |
1993年 | 34篇 |
1992年 | 75篇 |
1991年 | 65篇 |
1990年 | 82篇 |
1989年 | 65篇 |
1988年 | 67篇 |
1987年 | 62篇 |
1986年 | 63篇 |
1985年 | 47篇 |
1984年 | 40篇 |
1983年 | 24篇 |
1982年 | 23篇 |
1980年 | 24篇 |
1979年 | 30篇 |
1977年 | 27篇 |
1976年 | 23篇 |
1974年 | 15篇 |
1973年 | 17篇 |
1970年 | 19篇 |
1969年 | 15篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
161.
David Oguttu Edson Byamukama Charles R. Katholi Peace Habomugisha Christine Nahabwe Monica Ngabirano Hassan K. Hassan Thomson Lakwo Moses Katabarwa Frank O. Richards Thomas R. Unnasch 《The American journal of tropical medicine and hygiene》2014,90(2):339-345
Uganda is the only African country whose onchocerciasis elimination program uses a two-pronged approach of vector control and mass drug distribution. The Ugandan program relies heavily upon the use of serosurveys of children to monitor progress toward elimination. The program has tested over 39,000 individuals from 11 foci for Onchocerca volvulus exposure, using the Ov16 ELISA test. The data show that the Ov16 ELISA is a useful operational tool to monitor onchocerciasis transmission interruption in Africa at the World Health Organization (WHO) recommended threshold of < 0.1% in children. The Ugandan experience has also resulted in a re-examination of the statistical methods used to estimate the boundary of the upper 95% confidence interval for the WHO prevalence threshold when all samples tested are negative. This has resulted in the development of Bayesian and hypergeometric statistical methods that reduce the number of individuals who must be tested to meet the WHO criterion. 相似文献
162.
163.
164.
165.
Mehdi Nouraie Fatemeh Hosseinkhah Hassan Brim Behrouz Zamanifekri Duane T. Smoot Hassan Ashktorab 《Digestive diseases and sciences》2010,55(5):1442-1449
Background and Aims
Among the ethnic groups, the age-standardized incidence rate of colorectal cancer (CRC) is highest among African-Americans. The majority of CRC arise from preexisting adenoma. It is shown that 30% of the US adult population has adenomas. The potential risk of malignant transformation in adenomas differs by specific pathologic and clinical characteristics that we aimed to study in AAs. 相似文献166.
167.
Background
Dental caries is still the most prevalent chronic disease worldwide. In the occupied Palestinian territory, data about oral health status and its determinants are scarce. This study aimed to assess the prevalence of dental caries and associated factors among schoolchildren in a random sample of marginalised schools in the West Bank.Methods
Marginalised schools (according to the School Support Program [SPP] criteria) were stratified by district, gender, and grade level to select a random sample of 20 schools. Students in the sixth and ninth grades were interviewed by senior dental students about their oral hygiene and diet habits. Students' weight, height, gingival health, and dental caries experience were assessed. Senior dental students were trained and calibrated to carry out the interviews and the examinations. Parental informed consents were collected by school administrative staff. Ethics approval for the study was obtained from the Al-Quds University Scientific Research Ethics Committee.Findings
In total, 1282 students completed the interviews and the clinical screening. The mean decayed, missing and filled teeth (DMFT) index was 6·4 (SD 4·4). According to the WHO dental caries experience classification, 49% (309 of 623) of the sixth grade students and 74% (484 of 658) of the ninth grade students fell in the high and very high categories. The mother's level of education and recent visit to the dentist correlated negatively with DMFT score (ρ=–0·06, p=0·029; ρ=–0·063, p=0·024). BMI was correlated positively with DMFT (r=0·092, p=0·001). Drinking milk and fresh juices was related to lower DMFT scores (r=–0·077, p=0·006 and r=–0·072, p=0·010). In the final model, grade (β=0·314, p<0·0001), gender (β=0·058, p=0·034), recent visit to the dentist (β=–0·059, p=0·029) and drinking fresh juices (β=–0·054, p=0·047) were significant factors in explaining the high level of dental caries in this sample.Interpretation
Students in the marginalised schools of the West Bank have high DMFT scores that indicate high prevalence of dental caries. Access to dental care and bad oral health habits are associated with high disease prevalence. Interventions to improve access to care and increase awareness about healthy diet and hygiene habits are crucial to alleviate the burden of oral disease in this population.Funding
AMIDEAST School Support Program (SSP). 相似文献168.
169.
Khorvash F Keshteli AH Salehi H Szeredi L Morré SA 《International journal of STD & AIDS》2008,19(8):563-564
Here, we present a 20-year-old man who presented with painful inguinal and femoral masses. He gave a history of sexual contact with a mare 14 days before his recent illness. He was diagnosed with lymphogranuloma venereum based on the histopathological findings and a high titre of IgG (1:1400). 相似文献
170.
Leontiou CA Gueorguiev M van der Spuy J Quinton R Lolli F Hassan S Chahal HS Igreja SC Jordan S Rowe J Stolbrink M Christian HC Wray J Bishop-Bailey D Berney DM Wass JA Popovic V Ribeiro-Oliveira A Gadelha MR Monson JP Akker SA Davis JR Clayton RN Yoshimoto K Iwata T Matsuno A Eguchi K Musat M Flanagan D Peters G Bolger GB Chapple JP Frohman LA Grossman AB Korbonits M 《The Journal of clinical endocrinology and metabolism》2008,93(6):2390-2401