全文获取类型
收费全文 | 1598篇 |
免费 | 94篇 |
国内免费 | 29篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 52篇 |
妇产科学 | 23篇 |
基础医学 | 179篇 |
口腔科学 | 28篇 |
临床医学 | 177篇 |
内科学 | 263篇 |
皮肤病学 | 11篇 |
神经病学 | 107篇 |
特种医学 | 109篇 |
外科学 | 209篇 |
综合类 | 66篇 |
预防医学 | 149篇 |
眼科学 | 139篇 |
药学 | 74篇 |
肿瘤学 | 133篇 |
出版年
2023年 | 6篇 |
2022年 | 10篇 |
2021年 | 16篇 |
2020年 | 6篇 |
2019年 | 17篇 |
2018年 | 25篇 |
2017年 | 13篇 |
2016年 | 15篇 |
2015年 | 22篇 |
2014年 | 24篇 |
2013年 | 48篇 |
2012年 | 61篇 |
2011年 | 72篇 |
2010年 | 38篇 |
2009年 | 28篇 |
2008年 | 58篇 |
2007年 | 108篇 |
2006年 | 68篇 |
2005年 | 84篇 |
2004年 | 73篇 |
2003年 | 76篇 |
2002年 | 59篇 |
2001年 | 66篇 |
2000年 | 89篇 |
1999年 | 71篇 |
1998年 | 28篇 |
1997年 | 25篇 |
1996年 | 18篇 |
1995年 | 15篇 |
1994年 | 24篇 |
1993年 | 24篇 |
1992年 | 57篇 |
1991年 | 39篇 |
1990年 | 37篇 |
1989年 | 40篇 |
1988年 | 33篇 |
1987年 | 23篇 |
1986年 | 28篇 |
1985年 | 29篇 |
1984年 | 30篇 |
1983年 | 14篇 |
1982年 | 11篇 |
1981年 | 9篇 |
1980年 | 12篇 |
1979年 | 11篇 |
1978年 | 12篇 |
1977年 | 13篇 |
1976年 | 8篇 |
1975年 | 8篇 |
1970年 | 6篇 |
排序方式: 共有1721条查询结果,搜索用时 31 毫秒
1.
Keratoconus and ocular massage 总被引:1,自引:0,他引:1
2.
Susan D. Ross M.D. Angela DiGeorge B.S. Janet E. Connelly B.S. Gregory W. Whiting B.S Neil McDonnell Pharm.D. 《Pharmacotherapy》1998,18(6):1290-1297
We performed a literature search for all clinical studies reporting outcomes in patients with the acquired immunodeficiency syndrome (AIDS) receiving granulocyte-macrophage colony-stimulating factor (GM-CSF) for any indication. Safety outcomes included human immunodeficiency virus replication, immune status, and frequency of opportunistic infections and neoplasms. Data were synthesized qualitatively. We identified 22 studies (274 patients): 12 addressed AIDS neutropenia, 8 AIDS cancer therapy, and 2 opportunistic infections. Viral burden was assessed by serum p24Ag in 15 studies. Nine reported no change in levels, three net decreases, and three net increases. All studies showing net increases involved patients receiving GM-CSF without a concurrent antiretroviral. The CD4 counts were unchanged in 5 studies, increased in 3, and not reported in 14. The incidence of neoplasms or new opportunistic infections was low. The literature suggests no increased risk of viral replication or clinical deterioration in patients with AIDS who take GM-CSF concurrently with zidovudine. 相似文献
3.
A newborn infant presenting with a divided congenital melanocytic naevus of the eyelid is described. Because of the severe disfigurement, risk of later malignant change in the lesion, and the possibility of deprivation amblyopia, early surgical treatment is recommended for all medium and large congenital melanocytic naevi of the eyelid. Surgery in the first few months of life gives the best cosmetic results. 相似文献
4.
5.
Brandon JC; Teplick SK; Haskin PH; Sammon JK; Muhr WF; Hofmann AF; Gambescia RA; Zitomer N 《Radiology》1988,166(3):665-667
The authors describe their experience with methyl tertiary butyl ether (MTBE) in a larger series of patients than previously reported in order to acquaint physicians with both its effectiveness for dissolution of common bile duct calculi and the limitations of its use. Ten patients with 13 biliary calculi underwent percutaneous stone dissolution treatment with the experimental cholesterol solvent, MTBE. Three stones completely dissolved within 30 minutes, seven were reduced in size, and three were visibly unaffected. All stones not completely dissolved were easily extracted by means of a stone basket except for one in a patient taken to surgery. Although MTBE perfusion is an effective technique for management of biliary calculi, practitioners should be aware that its use is quite time consuming and its odor difficult to control. 相似文献
6.
P L Glick C L Leach G E Besner E A Egan F C Morin A Malanowska-Kantoch L K Robinson A Brody A S Lele M McDonnell 《Journal of pediatric surgery》1992,27(7):866-869
Exogenous surfactant therapy (EST) in surfactant-deficient premature infants has been shown to improve lung compliance, decrease morbidity, and improve survival. Reports have demonstrated that newborns with congenital diaphragmatic hernia (CDH) have lung compliance, pressure-volume curves, and hyaline membrane formation resembling those changes seen in surfactant deficient premature newborns. We hypothesize that EST may also benefit infants with CDH. All high risk cases of prenatally diagnosed CDH at Children's Hospital of Buffalo from November 1988 to February 1991 were prospectively evaluated for EST. In those families who chose to participate, the surfactant preparation, Infasurf (100 mg/kg), was instilled into the newborn's lungs prior to the first breath. The remainder of the perinatal, neonatal, and surgical care was performed in a routine manner. Three high-risk prenatally diagnosed newborns with left CDH were treated with EST. All showed signs of decreased pulmonary compliance, but could still be adequately oxygenated and ventilated. Surgical correction was performed after stabilization and all required patch closures. Two of the three infants suffered no life-threatening episodes of pulmonary hypertension and all survived. These infants had many known indicators for poor outcome in CDH with an expected survival of less than 20%. We believe that EST in these neonates with CDH contributed to their survival with minimum morbidity. These results suggest that surfactant replacement for the high-risk neonate with CDH warrants further consideration and a randomized clinical trial is being planned. 相似文献
7.
8.
9.
Keith J. Slifer Melissa Beck Adrianna Amari Tanya Diver Lisa Hilley Alana Kane Sharon McDonnell 《Children's Health Care》2003,32(2):81-101
This study investigated relationships between child/parent dissatisfaction with child facial appearance and the self-concept/social competence of 8- to 15-year-old children with (N = 34) and without (N = 34) oral clefts. Children in both groups had normative psychosocial adjustment, but also reported moderate dissatisfaction with facial appearance. Cleft group parents were more likely to agree with their child's dissatisfaction. When cleft group parents were more dissatisfied with child facial appearance, their children reported better quality of life. Results suggest that parents of children with clefts reporting greater dissatisfaction may respond in positive ways that enhance quality of life. 相似文献
10.
Intestinal obstruction proximal to a transition zone without an interposed physical barrier usually indicates Hirschsprung disease. The authors report one case of focal small bowel muscular thinning just distal to a transition zone that produced clinical and radiographic findings that simulated long-segment Hirschsprung disease in a 2-day-old infant. 相似文献