全文获取类型
收费全文 | 7095篇 |
免费 | 336篇 |
国内免费 | 66篇 |
专业分类
耳鼻咽喉 | 43篇 |
儿科学 | 183篇 |
妇产科学 | 170篇 |
基础医学 | 851篇 |
口腔科学 | 185篇 |
临床医学 | 436篇 |
内科学 | 1620篇 |
皮肤病学 | 182篇 |
神经病学 | 607篇 |
特种医学 | 154篇 |
外科学 | 1054篇 |
综合类 | 25篇 |
一般理论 | 1篇 |
预防医学 | 587篇 |
眼科学 | 269篇 |
药学 | 319篇 |
中国医学 | 18篇 |
肿瘤学 | 793篇 |
出版年
2023年 | 34篇 |
2022年 | 46篇 |
2021年 | 217篇 |
2020年 | 105篇 |
2019年 | 190篇 |
2018年 | 198篇 |
2017年 | 118篇 |
2016年 | 152篇 |
2015年 | 194篇 |
2014年 | 260篇 |
2013年 | 350篇 |
2012年 | 574篇 |
2011年 | 606篇 |
2010年 | 301篇 |
2009年 | 307篇 |
2008年 | 546篇 |
2007年 | 514篇 |
2006年 | 505篇 |
2005年 | 499篇 |
2004年 | 446篇 |
2003年 | 356篇 |
2002年 | 372篇 |
2001年 | 46篇 |
2000年 | 35篇 |
1999年 | 33篇 |
1998年 | 38篇 |
1997年 | 41篇 |
1996年 | 43篇 |
1995年 | 40篇 |
1994年 | 25篇 |
1993年 | 24篇 |
1992年 | 28篇 |
1991年 | 19篇 |
1990年 | 19篇 |
1989年 | 23篇 |
1988年 | 17篇 |
1987年 | 11篇 |
1986年 | 13篇 |
1985年 | 14篇 |
1984年 | 15篇 |
1983年 | 14篇 |
1982年 | 14篇 |
1981年 | 10篇 |
1980年 | 5篇 |
1979年 | 7篇 |
1977年 | 9篇 |
1976年 | 6篇 |
1971年 | 4篇 |
1963年 | 4篇 |
1936年 | 4篇 |
排序方式: 共有7497条查询结果,搜索用时 31 毫秒
1.
2.
Foc Emanuele Fornari Chiara Arsuffi Stefania Vetrano Maria Chiara Calza Stefano Renzetti Stefano Copeta Silvia Berruti Alfredo Castelli Francesco Compostella Silvia Quiros-Roldan Eugenia 《AIDS and behavior》2022,26(9):2920-2930
AIDS and Behavior - People living with chronic disease (PLWCD) are the frailest category, both for the risk of severe COVID-19 illness and for the impact on the care continuum. Aim of this study... 相似文献
3.
4.
5.
6.
Redondo Alfredo Paradela-Dobarro Beatriz Moscoso Isabel Moure-Álvarez María Cebro-Márquez María González-Juanatey José Ramón García-Seara Javier Álvarez Ezequiel 《Journal of molecular medicine (Berlin, Germany)》2021,99(7):955-956
Journal of Molecular Medicine - A Correction to this paper has been published: https://doi.org/10.1007/s00109-021-02062-6 相似文献
7.
8.
Rogrio Gonalves da Rocha Eliane Macedo Sobrinho Santos Elo Mangabeira Santos Emisael Stênio Batista Gomes Guilherme Veloso Ramos Karina Marini Aguiar Bruno Rodrigues Gonalves Srgio Henrique Sousa Santos Alfredo Maurício Batista De Paula Andr Luiz Sena Guimares Lucyana Conceio Farias 《Journal of oral pathology & medicine》2019,48(1):17-23
9.
Alazne Belar Maria Arantzamendi Alfredo Rodríguez-Núñez Yolanda Santesteban Marina Martinez Mario López-Saca Sara Consigli Jesús López-Fidalgo Carlos Centeno 《Journal of pain and symptom management》2019,57(3):627-634
Context
Demoralization is a state of existential distress in patients with advanced illness, typically with coping difficulties, feelings of loss of sense, and purpose in life and despair, among other things. The New Demoralization Scale (DS-II) is an evaluation tool for this syndrome, which has recently been reformulated on a shorter scale.Objectives
The objective of this study was to obtain a Spanish version of the DS-II and to assess its psychometric properties in advanced cancer patients in Spain and a number of Latin American countries.Methods
Following a translation–back translation process, a validation study and a confirmatory analysis using structural equation models with their corresponding latent constructs were undertaken. Patients completed the DS-II in Spanish (DS-II (es)), the Hospital Anxiety and Depression Scale, and the Edmonton Symptom Assessment System–revised. Reliability was studied according to internal consistency; construct validity and concurrent validity with the Hospital Anxiety and Depression Scale and the Edmonton Symptom Assessment System–revised; discriminant validity using the Karnofsky Performance Status scale; and feasibility, with response ratio and required time. Cutoff points were established, and sensitivity and specificity were studied.Results
The DS-II (es) was obtained. One hundred fifty patients completed the validation study. The confirmatory analysis showed coherence, and all items correlated positively with their subscales and with the overall scale. Cronbach's alpha for the DS-II (es) was 0.88, for the sense and purpose subscale 0.83, and for the coping ability 0.79. Demoralization correlated significantly with emotional distress (rho = 0.73, P < 0.001). The tool distinguished between patients with diverse functional levels (rho = ?0.319, P = 0.001). Cutoff points at 10 and 20 out of 32 were established. The scale showed high sensitivity (81.97%) and specificity (80.90%). The prevalence of demoralization was 33% in our sample.Conclusion
The Spanish version of the new Kissane DS-II demoralization scale has shown to be valid, reliable, and feasible with adequate psychometric properties. 相似文献10.