全文获取类型
收费全文 | 92878篇 |
免费 | 5951篇 |
国内免费 | 2579篇 |
专业分类
耳鼻咽喉 | 1068篇 |
儿科学 | 2080篇 |
妇产科学 | 2643篇 |
基础医学 | 7629篇 |
口腔科学 | 1699篇 |
临床医学 | 7733篇 |
内科学 | 10338篇 |
皮肤病学 | 1375篇 |
神经病学 | 5968篇 |
特种医学 | 3660篇 |
外国民族医学 | 7篇 |
外科学 | 9623篇 |
综合类 | 15169篇 |
现状与发展 | 3篇 |
一般理论 | 6篇 |
预防医学 | 7165篇 |
眼科学 | 2179篇 |
药学 | 11183篇 |
118篇 | |
中国医学 | 6818篇 |
肿瘤学 | 4944篇 |
出版年
2024年 | 184篇 |
2023年 | 1229篇 |
2022年 | 2377篇 |
2021年 | 3353篇 |
2020年 | 3092篇 |
2019年 | 3001篇 |
2018年 | 2991篇 |
2017年 | 2723篇 |
2016年 | 2961篇 |
2015年 | 2910篇 |
2014年 | 6258篇 |
2013年 | 7058篇 |
2012年 | 5901篇 |
2011年 | 6535篇 |
2010年 | 5460篇 |
2009年 | 4666篇 |
2008年 | 4493篇 |
2007年 | 4408篇 |
2006年 | 3815篇 |
2005年 | 3380篇 |
2004年 | 2863篇 |
2003年 | 2764篇 |
2002年 | 2130篇 |
2001年 | 1989篇 |
2000年 | 1544篇 |
1999年 | 1413篇 |
1998年 | 1197篇 |
1997年 | 1041篇 |
1996年 | 939篇 |
1995年 | 876篇 |
1994年 | 744篇 |
1993年 | 619篇 |
1992年 | 561篇 |
1991年 | 496篇 |
1990年 | 509篇 |
1989年 | 435篇 |
1988年 | 328篇 |
1987年 | 287篇 |
1986年 | 341篇 |
1985年 | 500篇 |
1984年 | 455篇 |
1983年 | 284篇 |
1982年 | 355篇 |
1981年 | 282篇 |
1980年 | 324篇 |
1979年 | 238篇 |
1978年 | 186篇 |
1977年 | 173篇 |
1976年 | 158篇 |
1975年 | 117篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
认知功能障碍在肌萎缩侧索硬化(ALS)患者中是普遍存在的,ALS伴认知功能障碍常提示预后不良。近年来对ALS患者认知功能障碍的研究取得了一定的进展,本文对ALS伴认知功能障碍的临床特点、生物标志物、遗传学特征和最新治疗进展进行综述,以期为ALS伴认知功能障碍的临床诊疗提供新思路。 相似文献
2.
《Archivos de bronconeumología》2022,58(3):246-254
We have updated recommendations on 12 controversial topics that were published in the 2013 National Consensus on the diagnosis, risk stratification and treatment of patients with pulmonary embolism (PE). A comprehensive review of the literature was performed for each topic, and each recommendation was evaluated in two teleconferences. For diagnosis, we recommend against using the Pulmonary Embolism Rule Out Criteria (PERC) rule as the only test to rule out PE, and we recommend using a D-dimer cutoff adjusted to age to rule out PE. We suggest using computed tomography pulmonary angiogram as the imaging test of choice for the majority of patients with suspected PE. We recommend using direct oral anticoagulants (over vitamin K antagonists) for the vast majority of patients with acute PE, and we suggest using anticoagulation for patients with isolated subsegmental PE. We recommend against inserting an inferior cava filter for the majority of patients with PE, and we recommend using full-dose systemic thrombolytic therapy for PE patients requiring reperfusion. The decision to stop anticoagulants at 3 months or to treat indefinitely mainly depends on the presence (or absence) and type of risk factor for venous thromboembolism, and we recommend against thrombophilia testing to decide duration of anticoagulation. Finally, we suggest against extensive screening for occult cancer in patients with PE. 相似文献
3.
4.
5.
《Cirugía espa?ola》2022,100(3):149-153
IntroductionThe Law for the Regulation of Health Professions (LOPS) indicates that health professionals will carry out continuous training throughout their professional life, and will regularly prove their professional competence. The objective of the study was to carry out a national survey to find out the opinion of Spanish surgeons and thus be able to prepare a recertification project by the Spanish Association of Surgeons (AEC).MethodsCross-sectional observational study carried out in June-July 2020, through a survey sent to the members of the AEC.ResultsThe survey had a total of 1230 visits and an overall completion rate of 784 responses (67.3%). 69.6% were unaware of the LOPS forecasts and 83.4% were unaware of similar initiatives in other specialties and 95.5% agreed to demand adequate information. 71.4% believed it necessary but only 57% believed that it should be mandatory. 82.9% would agree that it should be regulated through an objective and predictable official procedure.ConclusionsThe concept of re-accreditation is not well known in our specialty and in view of the results obtained, adequate and reliable information seems necessary. Therefore, it would be pertinent to propose by the AEC a specific project to assess activities and skills. 相似文献
6.
Hannah C. Nordhues Anjali Bhagra Natya N. Stroud Jennifer A. Vencill Carol L. Kuhle 《Mayo Clinic proceedings. Mayo Clinic》2021,96(7):1907-1920
The coronavirus disease 2019 (COVID-19) pandemic has rapidly created widespread impacts on global health and the economy. Data suggest that women are less susceptible to severe illness. However, sex-disaggregated data are incomplete, leaving room for misinterpretation, and focusing only on biologic sex underestimates the gendered impact of the pandemic on women. This narrative review summarizes what is known about gender disparities during the COVID-19 pandemic and the economic, domestic, and health burdens along with overlapping vulnerabilities related to the pandemic. In addition, this review outlines recommended strategies that advocacy groups, community leaders, and policymakers should implement to mitigate the widening gender disparities related to COVID-19. 相似文献
7.
Heather L. Brown 《Journal of emergency nursing》2021,47(2):321-325
The coronavirus 2019 pandemic has affected almost every aspect of health care delivery in the United States, and the emergency medicine system has been hit particularly hard while dealing with this public health crisis. In an unprecedented time in our history, medical systems and clinicians have been asked to be creative, flexible, and innovative, all while continuing to uphold the important standards in the US health care system. To continue providing quality services to patients during this extraordinary time, care providers, organizations, administrators, and insurers have needed to alter longstanding models and procedures to respond to the dynamics of a pandemic. The Emergency Medicine Treatment and Active Labor Act of 1986, or EMTALA, is 1 example of where these alterations have allowed health care facilities and clinicians to continue their work of caring for patients while protecting both the patients and the clinicians themselves from infectious exposures at the same time. 相似文献
8.
9.
Jesus K Yamamoto-Furusho Norma N Parra-Holgu n 《World journal of gastroenterology : WJG》2021,27(48):8242-8261
Inflammatory bowel disease (IBD) is a chronic disease that requires chronic treatment throughout the evolution of the disease, with a complex physiopathology that entails great challenges for the development of new and specific treatments for ulcerative colitis and Crohn´s disease. The anti-tumor necrosis factor alpha therapy has impacted the clinical course of IBD in those patients who do not respond to conventional treatment, so there is a need to develop new therapies and markers of treatment response. Various pathways involved in the development of the disease are known and the new therapies have focused on blocking the inflammatory process at the gastrointestinal level by oral, intravenous, subcutaneous, and topical route. All these new therapies can lead to more personalized treatments with higher success rates and fewer relapses. These treatments have not only focused on clinical remission, but also on achieving macroscopic changes at the endoscopic level and microscopic changes by achieving mucosal healing. These treatments are mainly based on modifying signaling pathways, by blocking receptors or ligands, reducing cell migration and maintaining the integrity of the epithelial barrier. Therefore, this review presents the efficacy and safety of the new treatments that are currently under study and the advances that have been made in this area in recent years. 相似文献
10.