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   5790160篇
  免费   449483篇
  国内免费   17417篇
耳鼻咽喉   81109篇
儿科学   186833篇
妇产科学   155367篇
基础医学   853068篇
口腔科学   165359篇
临床医学   538762篇
内科学   1064612篇
皮肤病学   138321篇
神经病学   480930篇
特种医学   220447篇
外国民族医学   1384篇
外科学   861273篇
综合类   159647篇
现状与发展   25篇
一般理论   3155篇
预防医学   483144篇
眼科学   139706篇
药学   414996篇
  25篇
中国医学   16406篇
肿瘤学   292491篇
  2021年   61121篇
  2019年   68223篇
  2018年   86983篇
  2017年   67322篇
  2016年   74391篇
  2015年   86033篇
  2014年   120960篇
  2013年   189299篇
  2012年   176660篇
  2011年   189544篇
  2010年   147068篇
  2009年   141574篇
  2008年   171048篇
  2007年   184350篇
  2006年   189223篇
  2005年   182749篇
  2004年   181784篇
  2003年   170037篇
  2002年   158161篇
  2001年   234555篇
  2000年   232962篇
  1999年   205493篇
  1998年   80946篇
  1997年   73895篇
  1996年   71620篇
  1995年   67145篇
  1994年   60963篇
  1993年   56297篇
  1992年   151922篇
  1991年   145722篇
  1990年   140952篇
  1989年   136982篇
  1988年   126295篇
  1987年   123737篇
  1986年   116732篇
  1985年   113464篇
  1984年   90214篇
  1983年   78774篇
  1982年   55941篇
  1981年   51312篇
  1980年   48023篇
  1979年   79776篇
  1978年   60756篇
  1977年   53222篇
  1976年   49500篇
  1975年   51000篇
  1974年   58209篇
  1973年   56161篇
  1972年   52687篇
  1971年   48952篇
排序方式: 共有10000条查询结果,搜索用时 953 毫秒
981.
982.
983.
984.
985.
986.
Capillary malformation–arteriovenous malformation syndrome (CM‐AVM) is an autosomal dominant disorder caused by RASA1 mutations. The prevalence and phenotypic spectrum are unknown. Evaluation of patients with multiple CMs is challenging because associated AVMs can be life threatening. The objective of this study was to describe the clinical characteristics of children presenting with features of CM‐AVM to an academic pediatric dermatology practice. After institutional review board approval was received, a retrospective chart review was performed of patients presenting between 2009 and 2012 with features of CM‐AVM. We report nine cases. Presenting symptoms ranged from extensive vascular stains and cardiac failure to CMs noted incidentally during routine skin examination. All demonstrated multiple CMs, two had Parkes Weber syndrome, and two had multiple infantile hemangiomas. Seven patients had family histories of multiple CMs; three had family histories of large, atypical CMs. Six had personal or family histories of AVMs. Genetic evaluation was recommended for all and was pursued by six families; four RASA1 mutations were identified, including one de novo. Consultations with neurology, cardiology, and orthopedics were recommended. Most patients (89%) have not required treatment to date. CM‐AVM is an underrecognized condition with a wide clinical spectrum that often presents in childhood. Further evaluation may be indicated in patients with multiple CMs. This study is limited by its small and retrospective nature.  相似文献   
987.
988.
Patients have become increasingly well informed with higher expectations to be involved in decision-making processes regarding their care and treatment. However, few studies have examined the impact of patient involvement on health care providers’ partnership-building communication. The aim of this study was to measure and explore the self-reported effects of patient involvement on the work of physicians and nurses. A questionnaire survey was distributed among cardiology staff in 12 Swedish hospitals (N = 488, response rate 67%). The sample was comprised of registered nurses (RNs, n = 303), licensed practical nurses (LPNs, n = 132), and physicians (MDs, n = 53). Confirmatory factor analysis was used to examine seven questionnaire statements concerning implications of patient involvement for one’s clinical work. Regression analyses were used to examine factors associated with staff’s partnership-building communication. Analysis confirmed two distinct factors accounting for 57% of the total variance, representing both negative—“Hassles”and positive—“Uplifts”aspects of patient involvement. Regression analyses revealed that only positive aspects (i.e., uplifts) of patient involvement predicted staff behavior aimed at involving patients. Working with actively involved patients may be a source of stress, both negative and positive, for health care professionals. By developing work routines for involving patients in their care, health care workplaces may help health care professionals to buffer the negative effects, and enhance the positive effects, of that stress.  相似文献   
989.
990.
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