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   1088518篇
  免费   76222篇
  国内免费   2953篇
耳鼻咽喉   14529篇
儿科学   33628篇
妇产科学   29971篇
基础医学   150902篇
口腔科学   28795篇
临床医学   92853篇
内科学   222973篇
皮肤病学   21489篇
神经病学   89674篇
特种医学   42619篇
外国民族医学   349篇
外科学   171775篇
综合类   22114篇
现状与发展   2篇
一般理论   524篇
预防医学   82193篇
眼科学   24142篇
药学   76747篇
  1篇
中国医学   2147篇
肿瘤学   60266篇
  2021年   8939篇
  2019年   9427篇
  2018年   12676篇
  2017年   10080篇
  2016年   10769篇
  2015年   12400篇
  2014年   17858篇
  2013年   27217篇
  2012年   37481篇
  2011年   40122篇
  2010年   23894篇
  2009年   22387篇
  2008年   38370篇
  2007年   40743篇
  2006年   40425篇
  2005年   40392篇
  2004年   38726篇
  2003年   37069篇
  2002年   36201篇
  2001年   43087篇
  2000年   43883篇
  1999年   38132篇
  1998年   12493篇
  1997年   11317篇
  1996年   11041篇
  1995年   10176篇
  1994年   9646篇
  1993年   9033篇
  1992年   29283篇
  1991年   28018篇
  1990年   27355篇
  1989年   26177篇
  1988年   24411篇
  1987年   24039篇
  1986年   23128篇
  1985年   22056篇
  1984年   17107篇
  1983年   14774篇
  1982年   9701篇
  1981年   8526篇
  1979年   15335篇
  1978年   11064篇
  1977年   9451篇
  1976年   8889篇
  1975年   9552篇
  1974年   11283篇
  1973年   10723篇
  1972年   10050篇
  1971年   9243篇
  1970年   8892篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
Abstract

Objective: To understand the origin of extremely high gonadotropin levels in a perimenopausal woman.

Methods: A 52-year-old woman with a 2?months of amenorrhea followed spontaneous menstrual cycles recovery was referred to our outpatient clinic with elevated follicle-stimulating hormone (FSH, 483 mUI/ml), luteinizing hormone (LH, 475 mUI/ml) and prolactin (PRL, 173?ng/ml). She was known to take levosulpiride. The gonadotropin levels did not fit with the clinical features.

Results: A gonadotroph tumor was ruled out. Further analysis confirmed constantly high FSH, LH and PRL levels. The measurements were repeated using different analytical platforms with different results. After serial dilutions, nonlinearity was present suggesting an immunoassay interference. After post-polyethylene glycol recovery, hormone levels appeared in the normal range. Anti-goat antibodies were recognized in the serum of the patient.

Conclusions: This case report shows a case of falsely abnormal high gonadotropin and PRL levels in a woman during menopause transition. In the clinical practice the evaluation of gonadotropin profile is not recommended at this age, but the abnormal levels stimulated further evaluation. An interference in the assay due to anti-goat antibodies resulted in abnormally high level of FSH and LH. A strict collaboration between clinicians and the laboratory is needed, when laboratory findings do not correspond to clinical findings.  相似文献   
4.
5.
6.
Abstract

This study is a single-center, retrospective analysis of postmenopausal women presenting with dyspareunia and vulvar pain, aiming to evaluate relative effectiveness of vestibular CO2 laser therapy as a treatment. Three monthly sessions of laser were performed to each patient and thereafter a three-months follow-up was stablished. A total number of 72 patients undergoing vestibular laser treatment were recruited from patient files in the period between 2016 and 2018. Among these, 39 women also received a concomitant treatment with ospemifene (60?mg/day) during the study period. There was a statistically significant reduction of all the symptoms in both groups up to the three month follow-up. Regarding dryness and dyspareunia, the relief tent to be more prominent in the ospemifene?+?laser group at all follow-ups and remained statistically significant at three-month follow-up. Specifically, vestibular dryness was significantly lower in the ospemifene?+?laser group compared with the laser treatment group (?87% vs???34%, respectively), and the vestibular health score started declining faster in the ospemifene?+?laser group. Although, additional research is needed to understand the mechanism of action, our data shows that a combination regimen of laser and ospemifene may improve clinical effectiveness for long-term treatment of symptoms associated with the under-recognized genitourinary syndrome of menopause.  相似文献   
7.
8.
9.
According to the current nutritional recommendations issued by professional diabetes and nutrition associations, diabetic patients should keep to a diet consisting of 45–60% carbohydrates, 10–20% protein, and not more than 35% fat. However, not all of these nutritional recommendations are evidence based. For example, current studies show that the intake of insoluble roughage may be underrepresented. It is also possible that diabetic patients could benefit from keeping to the lower end of the recommended range for carbohydrates (45%) and the upper end of the range advised for protein (20%).  相似文献   
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