首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   191篇
  免费   5篇
耳鼻咽喉   1篇
儿科学   2篇
妇产科学   155篇
口腔科学   1篇
临床医学   12篇
内科学   4篇
神经病学   2篇
外科学   5篇
预防医学   10篇
肿瘤学   4篇
  2023年   1篇
  2020年   1篇
  2018年   1篇
  2017年   2篇
  2016年   1篇
  2015年   1篇
  2011年   1篇
  2008年   2篇
  2006年   1篇
  2003年   1篇
  2001年   2篇
  1999年   18篇
  1998年   10篇
  1997年   26篇
  1996年   14篇
  1995年   9篇
  1994年   14篇
  1993年   8篇
  1992年   6篇
  1991年   7篇
  1990年   5篇
  1989年   8篇
  1988年   9篇
  1987年   1篇
  1986年   9篇
  1985年   5篇
  1984年   3篇
  1983年   3篇
  1982年   4篇
  1981年   1篇
  1980年   3篇
  1979年   3篇
  1978年   1篇
  1977年   2篇
  1976年   1篇
  1975年   3篇
  1973年   3篇
  1972年   1篇
  1971年   1篇
  1970年   1篇
  1966年   1篇
  1964年   1篇
  1963年   1篇
排序方式: 共有196条查询结果,搜索用时 15 毫秒
1.
2.
3.
Objective To provide a valid estimate of singleton neonatal mortality based on birthweight and gestational age at delivery.
Design Record linkage of maternity data and neonatal mortality data.
Setting Scotland, UK.
Population All singleton preterm deliveries from 24 to 36 weeks inclusive between 1985 and 1994.
Main outcome measure Neonatal death.
Results There were 625,646 liveborn singleton deliveries over the study period, of which 33,912 were preterm (5.4%). The overall neonatal mortality in the preterm group was 41/1000 and the data have been presented by both gestational age and birthweight. The neonatal mortality rate fell with advancing gestation from 795/1000 live births at 24 weeks to 9/1000 live births at 36 weeks and was higher at the extremes of birthweight for a given gestational age. There was a significant increase in the proportion of babies delivered iatrogenically over the study period (χ test for trend   P < 0.001  ).
Conclusion This is the largest recent series to consider neonatal mortality using both birthweight and gestational age. These figures will be of use in obstetric management when elective preterm delivery is considered, and for providing prognostic guidance following preterm delivery.  相似文献   
4.
5.
6.
7.
Objective To assess the results of a policy of tailored conservative surgical management for young women with stage I ovarian carcinomas.
Design Retrospective study.
Participants Ninety-nine women aged 40 years or younger who underwent either primary surgery in our department or were referred after primary surgery performed elsewhere.
Methods Of the 99 women in our study, 56 underwent fertility-sparing surgery and 43 more radical surgery. Minimal requirements for conservative management were adequate staging and complete information about the therapeutic options. Factors important in the choice of the treatment were, age, wish to preserve fertility, histologic type and grade, and the stage of the tumour.
Results Conservative treatment was conducted in 84% of nulliparous and in 33% of parous women; 62% of grade 1 tumours, 48% of grade 2, and 50% of grade 3 were treated conservatively. With a median follow up of seven years, we observed five recurrences (9%) of carcinoma in women treated conservatively and five (12%) in those treated more radically. Two women (one in each treatment arm) were saved after recurrence. Two recurrences after conservative surgery involved the residual ovary (3.6%). Two women developed borderline tumour in the contralateral ovary and both were treated by surgery.
Conclusion After adequate staging and accurate information is given to the patient, conservative treatment may be safe in some women with early ovarian cancer. The risk of recurrence in the contralateral ovary is low. Conservative surgery may be also considered in some Stage I grade 3 tumours and in some women with stage IC tumours.  相似文献   
8.
This study aimed to assess the psychological status of men with haemophilia and HIV infection and to monitor changes in psychlogical status over time, in order to evaluate the need for psychological support. The study included 24 HIV seropositive men and a control group of 21 HIV seronegative men who attended the Haemophilia Centre in Bari (Italy). Subjects underwent psychological tests (STAl-Y: State and Trait Anxiety Inventory; SDS: Self-Rating Depression Scale) and completed a questionnaire on the emotional impact of AIDS. Assessment was repeated at 6-monthly intervals over a 2-year period. Contrary to expectation, HIV seronegative men with haemophilia had worse anxiety and depression scores, reported more confusion and fear, and had more reluctance towards the use of blood products (despite their present safety) than HIV seropositives. Possible reasons for these findings are considered, and their implications for clinical practice discussed.  相似文献   
9.
10.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号