全文获取类型
收费全文 | 1575883篇 |
免费 | 119387篇 |
国内免费 | 6484篇 |
专业分类
耳鼻咽喉 | 18774篇 |
儿科学 | 51096篇 |
妇产科学 | 40586篇 |
基础医学 | 210396篇 |
口腔科学 | 38664篇 |
临床医学 | 138791篇 |
内科学 | 322183篇 |
皮肤病学 | 33349篇 |
神经病学 | 132669篇 |
特种医学 | 66619篇 |
外国民族医学 | 278篇 |
外科学 | 251466篇 |
综合类 | 34651篇 |
现状与发展 | 2篇 |
一般理论 | 457篇 |
预防医学 | 128570篇 |
眼科学 | 31925篇 |
药学 | 107574篇 |
5篇 | |
中国医学 | 2906篇 |
肿瘤学 | 90793篇 |
出版年
2018年 | 37297篇 |
2017年 | 29651篇 |
2016年 | 34889篇 |
2015年 | 16805篇 |
2014年 | 22913篇 |
2013年 | 33245篇 |
2012年 | 47229篇 |
2011年 | 64544篇 |
2010年 | 45521篇 |
2009年 | 37962篇 |
2008年 | 60749篇 |
2007年 | 66449篇 |
2006年 | 43908篇 |
2005年 | 44596篇 |
2004年 | 44046篇 |
2003年 | 44652篇 |
2002年 | 40139篇 |
2001年 | 66813篇 |
2000年 | 68905篇 |
1999年 | 57165篇 |
1998年 | 17497篇 |
1997年 | 15764篇 |
1996年 | 16493篇 |
1995年 | 16677篇 |
1994年 | 15536篇 |
1993年 | 14526篇 |
1992年 | 47382篇 |
1991年 | 46046篇 |
1990年 | 44246篇 |
1989年 | 42039篇 |
1988年 | 38968篇 |
1987年 | 38279篇 |
1986年 | 36031篇 |
1985年 | 34808篇 |
1984年 | 26525篇 |
1983年 | 22261篇 |
1982年 | 14047篇 |
1981年 | 12546篇 |
1980年 | 11927篇 |
1979年 | 23684篇 |
1978年 | 17177篇 |
1977年 | 14438篇 |
1976年 | 13276篇 |
1975年 | 13748篇 |
1974年 | 16158篇 |
1973年 | 15424篇 |
1972年 | 14184篇 |
1971年 | 13045篇 |
1970年 | 11920篇 |
1969年 | 11147篇 |
排序方式: 共有10000条查询结果,搜索用时 484 毫秒
131.
132.
M. Alexandra Friedman Charlotte M. Niznik Janelle R. Bolden Lynn M. Yee 《Journal of community health》2016,41(2):354-358
While peer support has been investigated in multiple clinical contexts, its application to the postpartum setting is unknown. The aim was to assess acceptability of a postpartum peer support program for women with diabetes. Observational survey-based needs assessment of forty low-income women with diabetes, receiving care at a major medical institution. Mean age and gravidity were 30.7 years and 3.15 ± 1.67 respectively. 45 % expressed interest in a “buddy.” There was no significant difference between groups desiring and not desiring this program. A majority of respondents desired telephone, text messaging, and in-person contacts (79.2, 72.1, 83.8 %), with 72.5 % of patients desiring diabetes-related activities during clinic waiting time. Many women desire a postpartum diabetes reciprocal peer program for support outside of clinician visits. Patients are receptive to educational services during their wait and outside of clinic time, a potentially valuable opportunity to share important health information. 相似文献
133.
134.
135.
Christopher Yeh Cem Atillasoy John T. Seykora Vivian Lee 《Journal of cutaneous pathology》2021,48(1):171-173
Respiratory cysts are benign lesions lined by normal respiratory epithelium. There are few reported cases localized to the orbit, while those of the eyelid are exceedingly rare. Respiratory cysts usually arise either from a non‐hereditary congenital malformation, where they are distinguished as choristomatous, or from trauma. Here, we report a case of a 53‐year‐old man who presented with a large right lower eyelid cyst that was histopathologically diagnosed as a respiratory cyst. 相似文献
136.
Digestive Diseases and Sciences - 相似文献
137.
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
138.
Dominique Trudel Luminita-Mihaela Avarvarei Michèle Orain Stéphane Turcotte Marie Plante Jean Grégoire Reinhild Kappelhoff David P. Labbé Dimcho Bachvarov Bernard Têtu Christopher M. Overall Isabelle Bairati 《Pathology, research and practice》2019,215(6):152369
Ovarian carcinoma is one of the most lethal malignancies, but only very few prognostic biomarkers are known. The degradome, comprising proteases, protease non-proteolytic homologues and inhibitors, have been involved in the prognosis of many cancer types, including ovarian carcinoma. The prognostic significance of the whole degradome family has not been specifically studied in high-grade serous ovarian cancer. A targeted DNA microarray known as the CLIP-CHIP microarray was used to identify potential prognostic factors in ten high-grade serous ovarian cancer women who had early recurrence (<1.6 years) or late/no recurrence after first line surgery and chemotherapy. In women with early recurrence, we identified seven upregulated genes (TMPRSS4, MASP1/3, SPC18, PSMB1, IGFBP2, CFI – encoding Complement Factor I – and MMP9) and one down-regulated gene (ADAM-10). Using immunohistochemistry, we evaluated the prognostic effect of these 8 candidate genes in an independent cohort of 112 high-grade serous ovarian cancer women. Outcomes were progression, defined according to CA-125 criteria, and death. Multivariate Cox proportional hazard regression models were done to estimate the associations between each protein and each outcome. High ADAM-10 expression (intensity of 2–3) was associated with a lower risk of progression (adjusted hazard ratio (HR): 0.51; 95% confidence interval (CI): 0.29-0.87). High complement factor I expression (intensity 2–3) was associated with a higher risk of progression (adjusted HR: 2.30, 95% CI: 1.17–4.53) and death (adjusted HR: 3.42; 95% CI: 1.72–6.79). Overall, we identified the prognostic value of two proteases, ADAM-10 and complement factor I, for high-grade serous ovarian cancer which could have clinical significance. 相似文献
139.
140.