全文获取类型
收费全文 | 1388466篇 |
免费 | 118500篇 |
国内免费 | 6484篇 |
专业分类
耳鼻咽喉 | 17412篇 |
儿科学 | 44203篇 |
妇产科学 | 37260篇 |
基础医学 | 190252篇 |
口腔科学 | 37080篇 |
临床医学 | 126303篇 |
内科学 | 289341篇 |
皮肤病学 | 32551篇 |
神经病学 | 115811篇 |
特种医学 | 57287篇 |
外国民族医学 | 278篇 |
外科学 | 219670篇 |
综合类 | 32043篇 |
现状与发展 | 2篇 |
一般理论 | 457篇 |
预防医学 | 110271篇 |
眼科学 | 29133篇 |
药学 | 97441篇 |
5篇 | |
中国医学 | 2284篇 |
肿瘤学 | 74366篇 |
出版年
2018年 | 15181篇 |
2017年 | 11900篇 |
2016年 | 14140篇 |
2015年 | 15843篇 |
2014年 | 22131篇 |
2013年 | 32516篇 |
2012年 | 40539篇 |
2011年 | 43333篇 |
2010年 | 26788篇 |
2009年 | 26133篇 |
2008年 | 40042篇 |
2007年 | 42460篇 |
2006年 | 43416篇 |
2005年 | 41923篇 |
2004年 | 39799篇 |
2003年 | 38732篇 |
2002年 | 36416篇 |
2001年 | 66382篇 |
2000年 | 68174篇 |
1999年 | 56904篇 |
1998年 | 17218篇 |
1997年 | 15419篇 |
1996年 | 16331篇 |
1995年 | 16502篇 |
1994年 | 15334篇 |
1993年 | 14370篇 |
1992年 | 47260篇 |
1991年 | 45882篇 |
1990年 | 44068篇 |
1989年 | 41903篇 |
1988年 | 38862篇 |
1987年 | 38152篇 |
1986年 | 35936篇 |
1985年 | 34703篇 |
1984年 | 26456篇 |
1983年 | 22191篇 |
1982年 | 13948篇 |
1981年 | 12534篇 |
1980年 | 11816篇 |
1979年 | 23588篇 |
1978年 | 17117篇 |
1977年 | 14421篇 |
1976年 | 13206篇 |
1975年 | 13743篇 |
1974年 | 16116篇 |
1973年 | 15416篇 |
1972年 | 14184篇 |
1971年 | 13042篇 |
1970年 | 11893篇 |
1969年 | 11109篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
51.
Ruiz-Úcar Elena Acín-Gándara Débora Medina-García Manuel Ronda Diego Cruzado Pereira-Pérez Fernando 《Obesity surgery》2022,32(2):569-570
Obesity Surgery - Laparoscopic sleeve gastrectomy (LSG) is increasingly playing a key role in obesity management. Such operations, however, carry complications sometimes including leaks. The... 相似文献
52.
Rocha Déborah Ribeiro Nery Jaqueline Freire Furini Leonardo Negri Constantino Carlos José Leopoldo Eller Lizziane Kretli Winkelströter Nai Gisele Alborghetti Nakagaki Wilson Romero 《Lasers in medical science》2020,35(8):1703-1709
Lasers in Medical Science - Studies reported the harmful effects of 2,4-D on body tissues, provoking changes in the anatomy and physiology of the kidneys, liver, and testicles. Thus, the objective... 相似文献
53.
54.
55.
Recurrent Oral and Genital Ulcers in an Infant: Neonatal Presentation of Pediatric Behçet Disease 下载免费PDF全文
Emma F. Johnson M.D. Danielle M. Hawkins M.D. Laura K. Gifford M.D. Aimee C. Smidt M.D. 《Pediatric dermatology》2015,32(5):714-717
Behçet disease is a complex, multisystem disease characterized by recurrent oral and genital ulcerations. It rarely occurs in infants or children. Neonatal Behçet disease has been reported in infants whose ulcers resolve at or before 9 weeks of age. Few cases of neonatal Behçet disease persisting into childhood have previously been reported. We report the case of a 1‐month‐old infant who presented with severe recurrent genital ulcerations and at 6 months developed recurrent oral ulcerations. Her orogenital ulcerations continue to recur. Human leukocyte antigen testing revealed HLA‐B51 and B44 positivity. This is a case of pediatric Behçet disease in the neonatal period. Behçet disease should be considered in the differential diagnosis of recurrent genital and oral ulcerations in infants and children. 相似文献
56.
Olutobi Babatope Ojuawo Olufemi Olumuyiwa Desalu Ademola Emmanuel Fawibe Ayotade Boluwatife Ojuawo Adeniyi Olatunji Aladesanmi Christopher Muyiwa Opeyemi Mosunmoluwa Obafemi Adio Abdulraheem Olayemi Jimoh Dele Ohinoyi Amadu Abayomi Fadeyi Kazeem Alakija Salami 《African health sciences》2020,20(4):1655
BackgroundThe optimal management of community acquired pneumonia (CAP) depends on the clinical and microbiological profile in the locality.ObjectivesTo determine the clinical and microbiological profile of patients admitted with CAP in Ilorin, Nigeria.MethodsOne hundred and two consenting consecutively selected patients with clinical and radiologic confirmation of CAP were recruited in 12 months. The socio-demographic, physical examination and laboratory/radiologic parameters were documented in a questionnaire. Microbiological evaluation of their sputum was done and blood samples were taken for complete blood count, culture, serum urea and serological evaluation for atypical bacteria and some viral pathogens.ResultsCAP constituted 5.9% of the total medical admissions during the one-year study period. The mean age of the patients was 49 ± 22 years with the largest frequency in those aged 65 years and above. The commonest symptoms were shortness of breath (96.1%) and cough (94.1%), with a median duration of 3 days from symptom onset to admission. Systemic hypertension was the commonest comorbid illness (25/102; 24.5%). Klebsiella pneumoniae was the predominant pathogen isolated (20/102; 28.1%). The susceptible antibiotics were Imipenem, Ceftazidime and Ceftriaxone. Intra-hospital mortality was 17.6%. CURB – 65 score of ≥ 2 and the presence of complications of CAP were the independent predictors of mortality.ConclusionCAP constitutes a significant disease burden in Ilorin, Nigeria. Typical bacteria accounted for over half of the pathogens isolated from the patients with gram negative agents predominating. This highlights a possible shift in the microbiological profile which could guide empirical treatment. 相似文献
57.
58.
59.
60.