全文获取类型
收费全文 | 1384423篇 |
免费 | 118221篇 |
国内免费 | 6476篇 |
专业分类
耳鼻咽喉 | 17267篇 |
儿科学 | 44257篇 |
妇产科学 | 37443篇 |
基础医学 | 190042篇 |
口腔科学 | 37103篇 |
临床医学 | 125451篇 |
内科学 | 288149篇 |
皮肤病学 | 32424篇 |
神经病学 | 115170篇 |
特种医学 | 57039篇 |
外国民族医学 | 278篇 |
外科学 | 218266篇 |
综合类 | 32238篇 |
现状与发展 | 3篇 |
一般理论 | 479篇 |
预防医学 | 111084篇 |
眼科学 | 29123篇 |
药学 | 96625篇 |
5篇 | |
中国医学 | 2274篇 |
肿瘤学 | 74400篇 |
出版年
2018年 | 14316篇 |
2017年 | 11307篇 |
2016年 | 13541篇 |
2015年 | 15155篇 |
2014年 | 21324篇 |
2013年 | 31820篇 |
2012年 | 39192篇 |
2011年 | 42105篇 |
2010年 | 26197篇 |
2009年 | 25610篇 |
2008年 | 39369篇 |
2007年 | 41919篇 |
2006年 | 42979篇 |
2005年 | 41668篇 |
2004年 | 39891篇 |
2003年 | 38690篇 |
2002年 | 36646篇 |
2001年 | 66424篇 |
2000年 | 68202篇 |
1999年 | 57045篇 |
1998年 | 17334篇 |
1997年 | 15525篇 |
1996年 | 16476篇 |
1995年 | 16641篇 |
1994年 | 15476篇 |
1993年 | 14505篇 |
1992年 | 47366篇 |
1991年 | 46022篇 |
1990年 | 44181篇 |
1989年 | 42044篇 |
1988年 | 38972篇 |
1987年 | 38297篇 |
1986年 | 36024篇 |
1985年 | 34847篇 |
1984年 | 26721篇 |
1983年 | 22401篇 |
1982年 | 14265篇 |
1981年 | 12865篇 |
1980年 | 12109篇 |
1979年 | 23744篇 |
1978年 | 17316篇 |
1977年 | 14618篇 |
1976年 | 13368篇 |
1975年 | 13908篇 |
1974年 | 16304篇 |
1973年 | 15550篇 |
1972年 | 14309篇 |
1971年 | 13165篇 |
1970年 | 11980篇 |
1969年 | 11181篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
91.
92.
Tselios Konstantinos Yap Kristy Su-Ying Pakchotanon Rattapol Polachek Ari Su Jiandong Urowitz Murray B. Gladman Dafna D. 《Clinical rheumatology》2019,38(1):269-269
Clinical Rheumatology - Prof. Ari Polachek on of the author of the published version of this article missed to add his second affiliation which is the Department of Rheumatology, Tel Aviv Sourasky... 相似文献
93.
94.
Widely Metastatic Squamous Cell Carcinoma Originating from Malignant Transformation of Hypertrophic Lichen Planus in a 24‐Year‐Old Woman: Case Report and Review of the Literature
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)
Lana X. Tong B.A. Matthew J. Weinstock M.D. Reed Drews M.D. Caroline C. Kim M.D. 《Pediatric dermatology》2015,32(3):e98-e101
Hypertrophic lichen planus (HLP) is a T‐cell‐mediated process typically presenting with hypertrophic or verrucous plaques on the lower limbs. We report the case of a 24‐year‐old woman with a history of HLP since age 3 years presenting with rapid malignant transformation of one lesion into a large squamous cell carcinoma (SCC). Subsequent examination revealed progressive, widespread metastatic involvement, and the patient ultimately died from her disease. SCC associated with HLP is rare, with a review of the literature revealing fewer than 50 cases. This case highlights the need to be aware of suspicious changes in HLP and to educate patients as to when to be reevaluated. 相似文献
95.
96.
97.
R.D. Olmos R.C. de Figueiredo E.M. Aquino P.A. Lotufo I.M. Bensenor 《Brazilian journal of medical and biological research》2015,48(8):751-758
Thyroid diseases are common, and use of levothyroxine is increasing worldwide. We
investigated the influence of gender, race and socioeconomic status on the diagnosis
and treatment of thyroid disorders using data from the Brazilian Longitudinal Study
of Adult Health (ELSA-Brasil), a multicenter cohort study of civil servants (35-74
years of age) from six Brazilian cities. Diagnosis of thyroid dysfunction was by
thyrotropin (TSH), and free thyroxine (FT4) if TSH was altered, and the use of
specific medications. Multivariate logistic regression models were constructed using
overt hyperthyroidism/hypothyroidism and levothyroxine use as dependent variables and
sociodemographic characteristics as independent variables. The frequencies of overt
hyper- and hypothyroidism were 0.7 and 7.4%, respectively. Using whites as the
reference ethnicity, brown, and black race were protective for overt hypothyroidism
(OR=0.76, 95%CI=0.64-0.89, and OR=0.53, 95%CI=0.43-0.67, respectively, and black race
was associated with overt hyperthyroidism (OR=1.82, 95%CI=1.06-3.11). Frequency of
hypothyroidism treatment was higher in women, browns, highly educated participants
and those with high net family incomes. After multivariate adjustment, levothyroxine
use was associated with female gender (OR=6.06, 95%CI=3.19-11.49) and high net family
income (OR=3.23, 95%CI=1.02-10.23). Frequency of hyperthyroidism treatment was higher
in older than in younger individuals. Sociodemographic factors strongly influenced
the diagnosis and treatment of thyroid disorders, including the use of
levothyroxine. 相似文献
98.
Andrea Stracciolini Jennifer Luz Gregory Walker Nicholas M. Edwards Avery D. Faigenbaum Gregory D. Myer 《The Physician and sportsmedicine》2020,48(2):199-207
ABSTRACT
Objective
To investigate primary care physician clinical practice patterns, barriers, and education surrounding pediatric physical activity (PA), and to compare practice patterns by discipline. 相似文献99.
Characteristics of hyperparathyroid states in the Canadian multicentre osteoporosis study (CaMos) and relationship to skeletal markers
下载免费PDF全文
![点击此处可从《Clinical endocrinology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
100.
Psoriasis is a chronic, inflammatory, immune‐mediated disease. Approximately 30% of patients have disease onset before age 18 years. Psoriasis in children and adolescents may be difficult to control, with subsequent poor quality of life and psychosocial consequences. We describe the case of a 12‐year‐old boy with severe, refractory, chronic plaque psoriasis for 6 years. Various therapeutic regimens including different topical corticosteroids, topical vitamin D analogs, phototherapy, photochemotherapy, systemic therapy with methotrexate, cyclosporin, and combination therapies showed only partial or transient responses with frequent relapses. Because anti‐interleukin‐12/23 agents have been successfully used in adults with psoriasis, ustekinumab was initiated and our patient showed a rapid, excellent, sustained response. No recurrence or flares have been observed after 33 months of follow‐up. This case illustrates that ustekinumab may be an effective and safe therapeutic option in adolescents with psoriasis. 相似文献