全文获取类型
收费全文 | 29711篇 |
免费 | 2107篇 |
国内免费 | 125篇 |
专业分类
耳鼻咽喉 | 351篇 |
儿科学 | 731篇 |
妇产科学 | 684篇 |
基础医学 | 3700篇 |
口腔科学 | 2156篇 |
临床医学 | 2240篇 |
内科学 | 7346篇 |
皮肤病学 | 710篇 |
神经病学 | 2485篇 |
特种医学 | 794篇 |
外科学 | 4310篇 |
综合类 | 174篇 |
一般理论 | 9篇 |
预防医学 | 2246篇 |
眼科学 | 606篇 |
药学 | 1449篇 |
中国医学 | 122篇 |
肿瘤学 | 1830篇 |
出版年
2023年 | 169篇 |
2022年 | 181篇 |
2021年 | 801篇 |
2020年 | 552篇 |
2019年 | 884篇 |
2018年 | 1068篇 |
2017年 | 737篇 |
2016年 | 778篇 |
2015年 | 910篇 |
2014年 | 1222篇 |
2013年 | 1476篇 |
2012年 | 2288篇 |
2011年 | 2382篇 |
2010年 | 1421篇 |
2009年 | 1164篇 |
2008年 | 1844篇 |
2007年 | 2084篇 |
2006年 | 1771篇 |
2005年 | 1613篇 |
2004年 | 1402篇 |
2003年 | 1203篇 |
2002年 | 1164篇 |
2001年 | 430篇 |
2000年 | 370篇 |
1999年 | 391篇 |
1998年 | 195篇 |
1997年 | 188篇 |
1996年 | 143篇 |
1995年 | 143篇 |
1994年 | 142篇 |
1993年 | 129篇 |
1992年 | 254篇 |
1991年 | 228篇 |
1990年 | 197篇 |
1989年 | 208篇 |
1988年 | 183篇 |
1987年 | 156篇 |
1986年 | 166篇 |
1985年 | 163篇 |
1984年 | 134篇 |
1983年 | 106篇 |
1982年 | 60篇 |
1981年 | 79篇 |
1979年 | 80篇 |
1978年 | 66篇 |
1977年 | 53篇 |
1976年 | 58篇 |
1975年 | 56篇 |
1973年 | 56篇 |
1972年 | 49篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
de Souza Gabriel Hernandez Machado Pandolfo Mariana Travi Bortoluzzi Eduardo Antunes da Silveira Teixeira Cleonice Rossetto Hebert Luís da Rosa Amanda Freitas Machado Renata Gondo da Fonseca Roberti Garcia Lucas 《Odontology / the Society of the Nippon Dental University》2022,110(3):535-544
Odontology - The purpose of this study was to investigate whether the root perforation repair with mineral aggregate-based cements affects the retention of customized fiberglass posts to bovine... 相似文献
2.
Chalub Lucas Orbolato Nunes Gabriel Pereira Ferrisse Túlio Morandin Strazzi-Sahyon Henrico Badaoui Dos Santos Paulo Henrique Gomes-Filho João Eduardo Cintra Luciano Tavares Angelo Sivieri-Araujo Gustavo 《Clinical oral investigations》2022,26(4):3343-3356
Clinical Oral Investigations - The objective of this systematic review and meta-analysis (SRM) was to answer the question whether the use of ultrasonic irrigation (UI) results in less postoperative... 相似文献
3.
Francisco Javier P rez Lara Maria Belen Jimenez Martinez Francisco Pozo Mu oz res Fontalba Navas Rogelio Garcia Cisneros Maria Jose Garcia Larrosa Ignacio Garcia Delgado Maria del Mar Callejon Gil 《World Journal of Clinical Cases》2021,9(23):6582-6590
The coronavirus disease 2019, which is caused by severe acute respiratory syndrome coronavirus 2, was first identified in December 2019 in Wuhan, China, and has since spread rapidly, evolving into a full-blown pandemic. We would like to report our experience after 1 year of this pandemic in the surgical service of a district hospital in Spain. There have been many changes (including new protocols) that our service and the hospital have undergone, to adapt to the new situation. We believe that this experience can be useful for other professionals who have lived and are living a similar situation. 相似文献
4.
5.
6.
Cheryl L. Rock PhD RD Cynthia A. Thomson PhD RD Kristen R. Sullivan MS MPH Carol L. Howe MD MLS Lawrence H. Kushi ScD Bette J. Caan DrPH Marian L. Neuhouser PhD RD Elisa V. Bandera MD PhD Ying Wang PhD Kimberly Robien PhD RD Karen M. Basen-Engquist PhD MPH Justin C. Brown PhD Kerry S. Courneya PhD Tracy E. Crane PhD RDN David O. Garcia PhD FACSM Barbara L. Grant MS RDN CSO FAND Kathryn K. Hamilton MA RDN CSO CDN FAND Sheri J. Hartman PhD Stacey A. Kenfield ScD Maria Elena Martinez PhD Jeffrey A. Meyerhardt MD MPH Larissa Nekhlyudov MD MPH Linda Overholser MD Alpa V. Patel PhD Bernardine M. Pinto PhD Mary E. Platek PhD RD CDN Erika Rees-Punia PhD MPH Colleen K. Spees PhD MEd RD LD FAND Susan M. Gapstur PhD Marjorie L. McCullough ScD RD 《CA: a cancer journal for clinicians》2022,72(3):230-262
The overall 5-year relative survival rate for all cancers combined is now 68%, and there are over 16.9 million survivors in the United States. Evidence from laboratory and observational studies suggests that factors such as diet, physical activity, and obesity may affect risk for recurrence and overall survival after a cancer diagnosis. The purpose of this American Cancer Society guideline is to provide evidence-based, cancer-specific recommendations for anthropometric parameters, physical activity, diet, and alcohol intake for reducing recurrence and cancer-specific and overall mortality. The audiences for this guideline are health care providers caring for cancer survivors as well as cancer survivors and their families. The guideline is intended to serve as a resource for informing American Cancer Society programs, health policy, and the media. Sources of evidence that form the basis of this guideline are systematic literature reviews, meta-analyses, pooled analyses of cohort studies, and large randomized clinical trials published since 2012. Recommendations for nutrition and physical activity during cancer treatment, informed by current practice, large cancer care organizations, and reviews of other expert bodies, are also presented. To provide additional context for the guidelines, the authors also include information on the relationship between health-related behaviors and comorbidities, long-term sequelae and patient-reported outcomes, and health disparities, with attention to enabling survivors' ability to adhere to recommendations. Approaches to meet survivors' needs are addressed as well as clinical care coordination and resources for nutrition and physical activity counseling after a cancer diagnosis. 相似文献
7.
8.
Mary Lynn McPherson Kathryn A. Walker Mellar P. Davis Eduardo Bruera Akhila Reddy Judith Paice Kasey Malotte Dawn Kashelle Lockman Charles Wellman Shelley Salpeter Nina M. Bemben James B. Ray Bernard J. Lapointe Roger Chou 《Journal of pain and symptom management》2019,57(3):635-645.e4
Methadone has several unique characteristics that make it an attractive option for pain relief in serious illness, but the safety of methadone has been called into question after reports of a disproportionate increase in opioid-induced deaths in recent years. The American Pain Society, College on Problems of Drug Dependence, and the Heart Rhythm Society collaborated to issue guidelines on best practices to maximize methadone safety and efficacy, but guidelines for the end-of-life scenario have not yet been developed. A panel of 15 interprofessional hospice and palliative care experts from the U.S. and Canada convened in February 2015 to evaluate the American Pain Society methadone recommendations for applicability in the hospice and palliative care setting. The goal was to develop guidelines for safe and effective management of methadone therapy in hospice and palliative care. This article represents the consensus opinion of the hospice and palliative care experts for methadone use at end of life, including guidance on appropriate candidates for methadone, detail in dosing, titration, and monitoring of patients' response to methadone therapy. 相似文献
9.
Martín-Nares Eduardo Zuñiga-Tamayo Diego Hinojosa-Azaola Andrea 《Clinical rheumatology》2019,38(1):97-106
Clinical Rheumatology - We aimed to estimate the frequency of overlap of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) with systemic autoimmune diseases. Retrospective... 相似文献
10.
Luis Veloza Cristina Teixido Natalia Castrejon Fina Climent Ana Carri Marta Marginet Davide Soldini Blanca Gonzlez‐Farr Inmaculada Ribera‐Cortada Armando Lopez‐Guillermo Eva Gonzlez‐Barca Adriana Sierra Mileyka Herrera Cndida Gmez Adriana Garcia Olga Balagu Elias Campo Antonio Martinez 《Histopathology》2019,75(6):799-812