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   6835篇
  免费   215篇
  国内免费   38篇
耳鼻咽喉   240篇
儿科学   136篇
妇产科学   294篇
基础医学   833篇
口腔科学   49篇
临床医学   443篇
内科学   1840篇
皮肤病学   128篇
神经病学   605篇
特种医学   113篇
外科学   739篇
综合类   59篇
一般理论   10篇
预防医学   327篇
眼科学   199篇
药学   675篇
中国医学   4篇
肿瘤学   394篇
  2023年   27篇
  2022年   176篇
  2021年   260篇
  2020年   72篇
  2019年   135篇
  2018年   151篇
  2017年   113篇
  2016年   124篇
  2015年   164篇
  2014年   210篇
  2013年   321篇
  2012年   447篇
  2011年   566篇
  2010年   277篇
  2009年   185篇
  2008年   447篇
  2007年   540篇
  2006年   495篇
  2005年   532篇
  2004年   520篇
  2003年   452篇
  2002年   394篇
  2001年   18篇
  2000年   24篇
  1999年   28篇
  1998年   29篇
  1997年   18篇
  1996年   24篇
  1995年   33篇
  1994年   21篇
  1993年   18篇
  1992年   14篇
  1991年   21篇
  1990年   9篇
  1989年   12篇
  1988年   7篇
  1987年   16篇
  1986年   9篇
  1985年   14篇
  1984年   22篇
  1983年   16篇
  1982年   22篇
  1981年   12篇
  1980年   10篇
  1979年   15篇
  1978年   12篇
  1977年   7篇
  1976年   5篇
  1974年   7篇
  1973年   6篇
排序方式: 共有7088条查询结果,搜索用时 15 毫秒
101.
The aim of this study was to evaluate the influenza vaccination status among paediatric patients with inflammatory bowel disease (IBD) in Poland. This was a questionnaire‐based study. 242 patients with IBD and 142 controls were enrolled in the study. Of patients with IBD, 7·8% received an influenza vaccine, compared to 18·3% of controls (P = 0·0013). There were no statistically significant differences in time from IBD diagnosis, disease activity and in drugs, between vaccinated and non‐vaccinated IBD children. In conclusion, the data of our study demonstrate an alarmingly poor influenza vaccination status in the majority of children with IBD. Therefore, there is an unmet need to implement better influenza vaccination strategies for this group of patients.  相似文献   
102.

Objective

Since over forty years structuralized interviews for clinical and epidemiological research in child and adolescent psychiatry are being developed that should increase validity and reliability of diagnoses according to classification systems (DSM and ICD). The aim of the study is to assess the validity of the Polish version of MINI-KID (Mini International Neuropsychiatric Interview for Children and Adolescents) in comparison to clinical diagnosis made by a specialist in the field of child and adolescent psychiatry.

Materials and methods

There were 140 patients included in the study (93 boys, 66.4%, mean age 11.8 ± 3.0 and 47 girls 33.5%, mean age 14.0 ± 2.9). All the patients were diagnosed by the specialist in the field of child and adolescent psychiatry according to ICD-10 criteria and by the independent interviewer with the Polish version of MINI-KID (version 2.0, 2001).

Results

There was higher agreement between clinical diagnoses and diagnoses based on MINI-KID interview with respect to eating disorders and externalizing disorders (κ 0.43–0.56) and lower in internalizing disorders (κ 0.13–0.45). In the clinical interview, there was smaller number of diagnostic categories (maximum 3 diagnoses per one patient) in comparison to MINI-KID (maximum 10 diagnoses per one patient), and the smaller percentage of patients with one diagnosis (65,7%) in comparison to MINI-KID interview (72%).

Conclusion

Our study has shown satisfactory validity parameters of MINI-KID questionnaire, promoting its use for clinical and epidemiological settings.

Implications and contribution

The Mini International Neuropsychiatry Interview for Children and Adolescent (MINI-KID) is the first structuralized diagnostic interview for assessing mental status in children and adolescents, which has been translated into Polish language. Our validation study demonstrated satisfactory psychometric properties of the questionnaire, enabling its use in clinical practice and in research projects.  相似文献   
103.
104.
105.
Chest pain is mainly linked with acute coronary syndrome, but sometimes it can be the only manifestation of ventricular tachycardia. We present a case of a young man who was diagnosed with Brugada syndrome after intracoronary acetylocholine injection, with negative test with flecanaide. First manifestation of a disease was a chest pain.  相似文献   
106.
107.
In presented case rotational angiography with three dimensional reconstruction (3DRA) was used for diagnostic and control angiograms during covered CP stent implantation in patient with critical aortic coarctation and patent ductus arteriosus. Administering less contrast then for standard two perpendicular projections, good quality images were obtained in at least seven projections.  相似文献   
108.
109.
The risk of stroke in patients hospitalized with an acute coronary syndrome (ACS) ranges from <1% to ≥2.5%. The aim of this study was to develop a simple predictive tool for bedside risk estimation of in-hospital ischemic stroke in patients with ACS to help guide clinicians in the acute management of these high-risk patients. Data were obtained from 63,118 patients enrolled from April 1999 to December 2007 in the Global Registry of Acute Coronary Events (GRACE), a multinational registry involving 126 hospitals in 14 countries. A regression model was developed to predict the occurrence of in-hospital ischemic stroke in patients hospitalized with an ACS. The main study outcome was the development of ischemic stroke during the index hospitalization for an ACS. Eight risk factors for stroke were identified: older age, atrial fibrillation on index electrocardiogram, positive initial cardiac biomarkers, presenting systolic blood pressure ≥160 mm Hg, ST-segment change on index electrocardiogram, no history of smoking, higher Killip class, and lower body weight (c-statistic 0.7). The addition of coronary artery bypass graft surgery and percutaneous coronary intervention into the model increased the prediction of stroke risk. In conclusion, the GRACE stroke risk score is a simple tool for predicting in-hospital ischemic stroke risk in patients admitted for the entire spectrum of ACS, which is widely applicable to patients in various hospital settings and will assist in the management of high-risk patients with ACS.  相似文献   
110.
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