全文获取类型
收费全文 | 8772篇 |
免费 | 1264篇 |
国内免费 | 138篇 |
专业分类
耳鼻咽喉 | 36篇 |
儿科学 | 130篇 |
妇产科学 | 62篇 |
基础医学 | 740篇 |
口腔科学 | 256篇 |
临床医学 | 1194篇 |
内科学 | 1520篇 |
皮肤病学 | 136篇 |
神经病学 | 810篇 |
特种医学 | 322篇 |
外国民族医学 | 1篇 |
外科学 | 912篇 |
综合类 | 922篇 |
现状与发展 | 1篇 |
预防医学 | 1085篇 |
眼科学 | 72篇 |
药学 | 1092篇 |
4篇 | |
中国医学 | 607篇 |
肿瘤学 | 272篇 |
出版年
2024年 | 41篇 |
2023年 | 383篇 |
2022年 | 617篇 |
2021年 | 905篇 |
2020年 | 685篇 |
2019年 | 709篇 |
2018年 | 603篇 |
2017年 | 482篇 |
2016年 | 390篇 |
2015年 | 367篇 |
2014年 | 608篇 |
2013年 | 634篇 |
2012年 | 410篇 |
2011年 | 461篇 |
2010年 | 318篇 |
2009年 | 324篇 |
2008年 | 332篇 |
2007年 | 306篇 |
2006年 | 230篇 |
2005年 | 202篇 |
2004年 | 173篇 |
2003年 | 147篇 |
2002年 | 112篇 |
2001年 | 84篇 |
2000年 | 81篇 |
1999年 | 69篇 |
1998年 | 54篇 |
1997年 | 61篇 |
1996年 | 50篇 |
1995年 | 45篇 |
1994年 | 39篇 |
1993年 | 33篇 |
1992年 | 29篇 |
1991年 | 20篇 |
1990年 | 17篇 |
1989年 | 14篇 |
1988年 | 22篇 |
1987年 | 8篇 |
1986年 | 12篇 |
1985年 | 22篇 |
1984年 | 8篇 |
1983年 | 10篇 |
1982年 | 10篇 |
1981年 | 5篇 |
1980年 | 9篇 |
1979年 | 6篇 |
1978年 | 4篇 |
1977年 | 4篇 |
1976年 | 7篇 |
1974年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
102.
《Diagnostic Histopathology》2023,29(6):283-293
The differential diagnosis of prostatic atypical large gland proliferations includes several benign and malignant entities. This review focusses on issues relevant to the practising pathologist, particularly around areas of controversy such as high-grade prostatic intraepithelial neoplasia (HGPIN) and intraductal carcinoma of the prostate (IDCP). HGPIN is a putative precursor of prostate cancer, but its clinical relevance is as a surrogate marker of unsampled prostate cancer, thereby identifying patients who would benefit from a prompt repeat biopsy. The incidence of missed prostate cancer is much lower in contemporary practice due to pre-biopsy MRI and extended sampling protocols so HGPIN is currently less important. It is however important to distinguish HGPIN from PIN-like carcinoma and IDCP. PIN-like carcinoma is considered a histological subtype/variant of acinar prostate carcinoma and should be graded as Gleason pattern 3. A diagnosis of cribriform HGPIN should not be made in needle biopsies as such a proliferation may represent IDCP. This review discusses controversies related to the diagnosis, reporting and management of IDCP. A personalized approach to management of patients with isolated IDCP in needle biopsies that is based on the histological and radiological features of an individual case is outlined. 相似文献
103.
《Anaesthesia and Intensive Care Medicine》2021,22(11):729-737
The clotting cascade is a complex process and is an important survival mechanism. Major haemorrhage and thromboembolic events remain major causes of increased morbidity and mortality. Drugs affecting coagulation have primarily been utilized to treat or reduce the risk of thromboembolic events. However, the recent progress in the management of major trauma and treating coagulopathy has resulted in further research and development of drugs that improve clotting function. Knowledge of drugs used for both clinical circumstances is now required when working in anaesthesia or intensive care. 相似文献
104.
105.
Joseph J. Alukal Talan Zhang Paul J. Thuluvath 《American journal of transplantation》2021,21(6):2211-2219
There is a paucity of data on the outcome of liver transplantation (LT) in Budd-Chiari Syndrome (BCS) patients who are listed as status 1. The objective of our study was to determine patient or graft survival following LT in status 1 BCS patients. We utilized United Network for Organ Sharing (UNOS) database to identify all adult patients (> 18 years of age) listed as status 1 with a primary diagnosis of BCS in the United States from 1998 to 2018, and analyzed their outcomes and compared it to non-status 1 BCS patients. Four hundred and forty-six patients with BCS underwent LT between 1998 and 2018, and of these 55 (12.3%) were listed as status 1. There was no difference in long-term post-liver transplant or “intention-to-treat” survival from the time of listing to death or the last day of follow-up between status 1 and non-status 1 groups. Graft and patient survival at 5 years for status 1 patients were 75% and 82%, respectively. Cox regression analysis showed that patients listed as status 1 (aHR: 0.45, p < .02) were associated with a better survival. BCS patients listed as status 1 have excellent survival following emergency LT. 相似文献
106.
Liza Johannesson Anji Wall Andreas Tzakis Cristiano Quintini Elliott G. Richards Kathleen O’Neill Paige M. Porrett Giuliano Testa 《American journal of transplantation》2021,21(5):1699-1704
The parallel emergence of uterus transplantation (UTx) and other transplantation innovations including face and hand transplantation led to the categorization of the uterus as a vascular composite allograft (VCA). With >60 transplants and >20 births worldwide, UTx is transitioning rapidly from a research endeavor to an effective treatment option for women with uterine factor infertility. While it originally made sense to group the innovations under one umbrella, it is time to revisit the designation of UTx as a VCA. We describe how UTx needs unique policy, procedural codes, insurance contracts, and educational initiatives. We contend that separating UTx from VCAs may become necessary in the future to avoid hindering the growth and regulation of this field. 相似文献
107.
Rebecca R. Goff Amber R. Wilk Alice E. Toll Maureen A. McBride David K. Klassen 《American journal of transplantation》2021,21(6):2100-2112
COVID-19 has been sweeping the globe, hitting the United States particularly hard with a state of emergency declared on March 13, 2020. Transplant hospitals have taken various precautions to protect patients from potential exposure. OPTN donor, candidate, and transplant data were analyzed from January 5, 2020 to September 5, 2020. The number of new waiting list registrations decreased, with the Northeast seeing over a 50% decrease from the week of 3/8 versus the week of 4/5. The national transplant system saw near cessation of living donor transplantation (−90%) from the week of 3/8 to the week of 4/5. Similarly, deceased donor kidney transplant volume dropped from 367 to 202 (−45%), and other organs saw similar decreases: lung (−70%), heart (−43%), and liver (−37%). Deceased donors recovered dropped from 260 to 163 (−45%) from 3/8 compared to 4/5, including a 67% decrease for lungs recovered. The magnitude of this decrease varied by geographic area, with the largest percent change (−67%) in the Northeast. Despite the pandemic, discard rates across organ has remained stable. Although the COVID-19 pandemic continues to evolve, OPTN data show recent evidence of stabilization, an indication that an early recovery of the number of living and deceased donors and transplants has ensued. 相似文献
108.
109.
网络规模迭加法是一种在社会网络理论基础上建立的间接估计人群规模的方法,由于不需要接触目标人群,在估计隐藏人群规模时得到了广泛应用。该方法也在不断发展进步中,本文从传统的网络规模迭加法及其进展及与新的调查技术结合三个方面进行综述,旨在为该方法的进一步应用提供参考。 相似文献
110.
目的:分析黑龙江省基本医疗保险异地就医直接结算运行现状,找到靶点问题,并给出政策性建议。方法:采用SPSS 20.0软件对黑龙江省异地就医人次、统筹基金支付金额、实际报销比例及转外就医定点医院情况等进行描述性分析。结果:黑龙江省异地就医人次呈现直线上升趋势;作为参保省的统筹基金支付约是作为就医省的11.8(26.92/2.28)倍;实际报销比例差距较大,待遇差较严重;转外就医主要集中于京津的肿瘤专科医院与综合三级甲等医院。结论:基本医疗保险面临着严峻的基金外流问题挑战,亟需加快医疗卫生服务供给侧改革,实现医保与医疗服务的协同发展,同时将基本医疗保险异地就医直接结算政策嵌入黑龙江省特色发展战略,推动社会现代化发展。 相似文献