全文获取类型
收费全文 | 5059篇 |
免费 | 305篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 37篇 |
儿科学 | 125篇 |
妇产科学 | 156篇 |
基础医学 | 538篇 |
口腔科学 | 51篇 |
临床医学 | 882篇 |
内科学 | 890篇 |
皮肤病学 | 40篇 |
神经病学 | 479篇 |
特种医学 | 84篇 |
外科学 | 559篇 |
综合类 | 51篇 |
一般理论 | 4篇 |
预防医学 | 781篇 |
眼科学 | 59篇 |
药学 | 321篇 |
中国医学 | 1篇 |
肿瘤学 | 314篇 |
出版年
2024年 | 6篇 |
2023年 | 39篇 |
2022年 | 60篇 |
2021年 | 145篇 |
2020年 | 96篇 |
2019年 | 147篇 |
2018年 | 179篇 |
2017年 | 117篇 |
2016年 | 154篇 |
2015年 | 145篇 |
2014年 | 173篇 |
2013年 | 270篇 |
2012年 | 430篇 |
2011年 | 435篇 |
2010年 | 236篇 |
2009年 | 184篇 |
2008年 | 303篇 |
2007年 | 303篇 |
2006年 | 332篇 |
2005年 | 360篇 |
2004年 | 272篇 |
2003年 | 284篇 |
2002年 | 215篇 |
2001年 | 34篇 |
2000年 | 22篇 |
1999年 | 31篇 |
1998年 | 38篇 |
1997年 | 34篇 |
1996年 | 33篇 |
1995年 | 24篇 |
1994年 | 12篇 |
1993年 | 25篇 |
1992年 | 23篇 |
1991年 | 20篇 |
1990年 | 10篇 |
1989年 | 13篇 |
1988年 | 12篇 |
1987年 | 18篇 |
1986年 | 10篇 |
1985年 | 11篇 |
1984年 | 19篇 |
1983年 | 25篇 |
1982年 | 13篇 |
1981年 | 14篇 |
1980年 | 9篇 |
1979年 | 10篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1976年 | 5篇 |
1974年 | 3篇 |
排序方式: 共有5372条查询结果,搜索用时 0 毫秒
1.
2.
3.
Bone mineral density testing in healthy postmenopausal women. The role of clinical risk factor assessment in determining fracture risk. 总被引:5,自引:0,他引:5
William D Leslie Colleen Metge Elizabeth A Salamon C Kin Yuen 《Journal of clinical densitometry》2002,5(2):117-130
The ease of measurement and the quantitative nature of bone mineral densitometry (BMD) is clinically appealing. Despite BMD's proven capability to stratify fracture risk, data indicate that clinical risk factors provide complementary information on fracture susceptibility that is independent of BMD. Methods to quantify fracture risk using both clinical and BMD variables would have great appeal for clinical decision-making. We describe a procedure for quantifying hip fracture risk (5-yr and remaining lifetime) based on (1) the individual's age alone (base model, assuming average clinical risk factors and bone density), (2) incorporation of multiple patient-specific clinical risk factor data in the base model, and (3) incorporation of both patient-specific clinical risk factor data and BMD results. 相似文献
4.
5.
6.
Colleen Delaney Barbara Piscopo 《Journal for nurses in staff development》2004,20(4):157-61; quiz 162-3
The nursing profession is facing a serious shortage in all areas including BSN completion programs. The purpose of this study was to explore associate degree and diploma nurses' perceptions of the benefits and barriers to RN-BSN programs. In addition, factors that would facilitate degree completion in academia and work environments were examined. 相似文献
7.
Twenty-nine females with metastatic or locally recurrent carcinoma of the breast were treated orally with 1 g of medroxyprogesterone acetate (MPA) daily. This was used as a second- or third-line treatment. Serum concentration of MPA was measured over a 28-day period. We have demonstrated a significantly greater area-under-the-concentration-time curve, peak, and steady-state MPA concentration for Provera at 100- and 200-mg tablets (Upjohn) than for Farlutal at 500-mg tablets (Farmitalia). Relative bioavailability of preparations should be considered when prescribing or assessing treatment results when MPA is used. 相似文献
8.
Colleen E. Kelley MD James Mathews MD Gary A. Noskin MD 《The Journal of emergency medicine》1991,9(6):417-420
Acute transverse myelitis (ATM) is a neurologic condition that presents with bilateral lower extremity weakness and sensory loss associated with bowel and bladder dysfunction. Whereas the time of onset may be hours to days, the time to either partial or complete recovery may require months. The etiology is varied and may be idiopathic. Laboratory and radiographic evaluation may be nonrevealing. Corticosteriods have been used for treatment, but their efficacy is controversial. As illustrated by this case report, the essential aspect of the initial management of ATM is the elimination of potentially treatable causes. 相似文献
9.
10.
M. Colleen van Doornik M.D. Raoul C. M. Hennekam M.D. Ph.D. 《Developmental medicine and child neurology》1992,34(5):454-458
The authors report a girl with left-sided hemiparesis and unilateral hydranencephaly of the opposite side. Her psychomotor development has been far better than expected--she is only mildly delayed. Hemihydranencephaly is a rare anomaly: only five other cases are reported in the literature, three of whom were also mildly delayed. The fourth patient had multiple congenital defects combined with the hemihydranencephaly and was severely retarded, and no data on the fifth patient were provided. It may be that the prognosis for hemihydranencephaly is better than for most other destructive encephalopathies, which generally carry a poor prognosis for psychomotor development. 相似文献