全文获取类型
收费全文 | 2919篇 |
免费 | 216篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 37篇 |
儿科学 | 82篇 |
妇产科学 | 68篇 |
基础医学 | 415篇 |
口腔科学 | 54篇 |
临床医学 | 290篇 |
内科学 | 555篇 |
皮肤病学 | 73篇 |
神经病学 | 339篇 |
特种医学 | 47篇 |
外科学 | 336篇 |
综合类 | 19篇 |
预防医学 | 388篇 |
眼科学 | 61篇 |
药学 | 182篇 |
中国医学 | 15篇 |
肿瘤学 | 181篇 |
出版年
2024年 | 11篇 |
2023年 | 71篇 |
2022年 | 117篇 |
2021年 | 227篇 |
2020年 | 140篇 |
2019年 | 146篇 |
2018年 | 175篇 |
2017年 | 102篇 |
2016年 | 105篇 |
2015年 | 94篇 |
2014年 | 134篇 |
2013年 | 158篇 |
2012年 | 230篇 |
2011年 | 241篇 |
2010年 | 136篇 |
2009年 | 105篇 |
2008年 | 148篇 |
2007年 | 144篇 |
2006年 | 131篇 |
2005年 | 123篇 |
2004年 | 115篇 |
2003年 | 80篇 |
2002年 | 62篇 |
2001年 | 11篇 |
2000年 | 15篇 |
1999年 | 10篇 |
1998年 | 10篇 |
1997年 | 11篇 |
1996年 | 11篇 |
1995年 | 13篇 |
1994年 | 2篇 |
1993年 | 10篇 |
1992年 | 3篇 |
1991年 | 5篇 |
1990年 | 10篇 |
1989年 | 7篇 |
1988年 | 4篇 |
1987年 | 8篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1975年 | 2篇 |
1937年 | 1篇 |
1928年 | 1篇 |
排序方式: 共有3142条查询结果,搜索用时 46 毫秒
141.
Alran S Sibony O Luton D Touitou S Fourchotte V Féraud O Oury JF Blot P 《Acta obstetricia et gynecologica Scandinavica》2004,83(6):554-559
BACKGROUND: The aim of this study was to investigate neonatal and maternal data in a large series of triplet pregnancies as a function of the decision regarding the route of delivery. METHODS: A retrospective series of 93 triplet pregnancies managed and delivered between 1989 and 2001 in a single perinatal department was analyzed. Seventy-eight women with triplet gestations who underwent a trial of labor were compared with 15 women with triplet gestations who delivered their infants by elective cesarean delivery. Neonatal outcomes assessed included respiratory distress syndrome, retinopathy of prematurity, necrotizing enterocolitis, intraventricular hemorrhage and Apgar scores. Maternal outcomes assessed included preeclampsia, blood transfusion, endometritis and urinary tract infection. RESULTS: Sixty-six of 78 women (84%) who underwent a trial of labor had a successful vaginal delivery of all three neonates. The other 12 delivered their infants by cesarean delivery. Perinatal mortality referred to 104 triplet pregnancies was 48/1000. CONCLUSIONS: Our experience suggests that offering vaginal delivery is an acceptable management plan for triplet gestation in a center with a sufficient number of triplet deliveries. 相似文献
142.
143.
The case is presented of a 59-year-old woman with myasthenia gravis. Fatigable ptosis and pseudoretraction caused by the myasthenia gravis are illustrated in a series of clinical photographs. 相似文献
144.
Gonzalez-Heydrich J Pandina GJ Fleisher CA Hsin O Raches D Bourgeois BF Biederman J 《Journal of child and adolescent psychopharmacology》2004,14(2):295-310
OBJECTIVE: The aim of this study was to study risperidone use in pediatric patients with comorbid epilepsy and psychiatric disorders. METHOD: We retrospectively reviewed the outpatient psychopharmacology medical records of patients with epilepsy, aged 19 and younger, who received risperidone for psychiatric disorders. RESULTS: Twenty-one (21) youths (mean age, 12.0 +/- 4.2 years) met our criteria for review. Mean risperidone dosage was 2.4 +/- 3.5 mg/day. Target symptoms included severe aggression, severe agitation, psychosis, and self-injurious behavior. Diagnoses included attention-deficit hyperactivity disorder (ADHD), learning disorder, and impulse control disorder. Seizure type was partial complex in 12 patients, generalized in 6 patients, neonatal in 1 patient, myoclonic in 1 patient, and unclassified in 1 patient. The average number of previous psychotropic trials was 3.5 +/- 3.0. Using a definition of response of a Clinical Global Impressions (CGI) improvement score of 2 or less, 15 patients (71%) were considered responders. Adverse effects were none to slight in 16 patients, moderate in 4 patients, and severe in 1 patient. Seizures did not worsen in any patient. CONCLUSIONS: Risperidone was associated with a clinically significant global improvement, without seizure exacerbation in youths with epilepsy and psychiatric disorders. Despite the limitations of the study design, the 71% responder rate is noteworthy in this treatment-refractory group. 相似文献
145.
Jespersen S Berk M Van Wyk C Dean O Dodd S Szabo CP Maud C 《International clinical psychopharmacology》2004,19(3):161-164
A pilot study was conducted to evaluate the usefulness of granisetron for the treatment of antidepressant induced sexual dysfunction in women. Twelve women with antidepressant induced sexual dysfunction (AISD) were assigned granisetron (n=5) or placebo (n=7) in a 14-day randomized, double-blind, placebo-controlled study. One participant in the granisetron group did not complete the study. Participants were assessed at baseline, day 7 and day 14 using the Feiger Sexual Function and Satisfaction Questionnaire and the Arizona Sexual Experience Scale. No statistical differences were measured at baseline or at endpoint between the granisetron or placebo group. This study did not produce evidence supporting the usefulness of granisetron in AISD. 相似文献
146.
147.
Diffusion of innovations in service organizations: systematic review and recommendations 总被引:19,自引:0,他引:19
This article summarizes an extensive literature review addressing the question, How can we spread and sustain innovations in health service delivery and organization? It considers both content (defining and measuring the diffusion of innovation in organizations) and process (reviewing the literature in a systematic and reproducible way). This article discusses (1) a parsimonious and evidence-based model for considering the diffusion of innovations in health service organizations, (2) clear knowledge gaps where further research should be focused, and (3) a robust and transferable methodology for systematically reviewing health service policy and management. Both the model and the method should be tested more widely in a range of contexts. 相似文献
148.
149.
Human papillomavirus was successfully detected by polymerase chain reaction (PCR) in menstrual blood or vaginal discharge collected in sanitary napkins in 100% of 17 women having koilocytosis, cervical intraepithelial neoplasia, or squamous carcinoma. We advocate this form of cervical cancer screening because of its high sensitivity and acceptance by patients. 相似文献
150.
Nitsche A Oswald O Steuer N Schetelig J Radonić A Thulke S Siegert W 《Clinical chemistry》2003,49(10):1683-1685