全文获取类型
收费全文 | 136158篇 |
免费 | 9651篇 |
国内免费 | 629篇 |
专业分类
耳鼻咽喉 | 1651篇 |
儿科学 | 3426篇 |
妇产科学 | 2449篇 |
基础医学 | 17435篇 |
口腔科学 | 2895篇 |
临床医学 | 13332篇 |
内科学 | 28129篇 |
皮肤病学 | 1757篇 |
神经病学 | 11956篇 |
特种医学 | 5400篇 |
外科学 | 21849篇 |
综合类 | 1918篇 |
现状与发展 | 1篇 |
一般理论 | 173篇 |
预防医学 | 12442篇 |
眼科学 | 2924篇 |
药学 | 9658篇 |
2篇 | |
中国医学 | 179篇 |
肿瘤学 | 8862篇 |
出版年
2023年 | 672篇 |
2022年 | 1048篇 |
2021年 | 2578篇 |
2020年 | 1469篇 |
2019年 | 2401篇 |
2018年 | 2927篇 |
2017年 | 2115篇 |
2016年 | 2233篇 |
2015年 | 2718篇 |
2014年 | 4025篇 |
2013年 | 6069篇 |
2012年 | 8888篇 |
2011年 | 9464篇 |
2010年 | 5272篇 |
2009年 | 4817篇 |
2008年 | 8395篇 |
2007年 | 8995篇 |
2006年 | 8572篇 |
2005年 | 8722篇 |
2004年 | 8385篇 |
2003年 | 7879篇 |
2002年 | 7697篇 |
2001年 | 1283篇 |
2000年 | 1063篇 |
1999年 | 1403篇 |
1998年 | 1630篇 |
1997年 | 1307篇 |
1996年 | 1252篇 |
1995年 | 1218篇 |
1994年 | 1036篇 |
1993年 | 1007篇 |
1992年 | 844篇 |
1991年 | 873篇 |
1990年 | 756篇 |
1989年 | 736篇 |
1988年 | 763篇 |
1987年 | 741篇 |
1986年 | 770篇 |
1985年 | 840篇 |
1984年 | 914篇 |
1983年 | 879篇 |
1982年 | 1135篇 |
1981年 | 1161篇 |
1980年 | 966篇 |
1979年 | 641篇 |
1978年 | 669篇 |
1977年 | 604篇 |
1976年 | 520篇 |
1975年 | 476篇 |
1974年 | 473篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
James Milligan Joseph Lee Matt Smith Lindsay Donaldson Peter Athanasopoulos Kent Bassett-Spiers 《The journal of spinal cord medicine》2020,43(2):223-233
Context: Persons with spinal cord injury (SCI) experience significant challenges when they access primary care and community services.Design: A provincial summit was held to direct research, education, and innovation for primary and community care for SCI.Setting: Toronto, Ontario, Canada.Participants: Key stakeholders (N?=?95) including persons with SCI and caregivers, clinicians from primary care, rehabilitation, and specialized care, researchers, advocacy groups, and policy makers.Methods: A one-day facilitated meeting that included guest speakers, panel discussions and small group discussions was held to generate potential solutions to current issues related to SCI care and to foster collaborative relationships to advance care for SCI. Perspectives on SCI management were shared by primary care, neurosurgery, rehabilitation, and members of the SCI communityOutcome Measures: Discussions were focused on five domains: knowledge translation and dissemination, application of best practices, communication, research, and patient service accessibility.Results: Summit participants identified issues and prioritized solutions to improve primary and community care including the creation of a network of key stakeholders to enable knowledge creation and dissemination; an online repository of SCI resources, integrated health records, and a clinical network for SCI care; development and implementation of strategies to improve care transitions across sectors; implementation of effective care models and improved access to services; and utilization of empowerment frameworks to support self-management.Conclusions: This summit identified priorities for further collaborative efforts to advance SCI primary and community care and will inform the development of a provincial SCI strategy aimed at improving the system of care for SCI. 相似文献
13.
14.
William R. C. Knight Cara R. Baker Nyree Griffin Wahyu Wulaningsih Mark Kelly Andrew R. Davies James A. Gossage 《British journal of cancer》2021,124(10):1653
Background A high Mandard score implies a non-response to chemotherapy in oesophageal adenocarcinoma. However, some patients exhibit tumour volume reduction and a nodal response despite a high score. This study examines survival and recurrence patterns in these patients.Methods Clinicopathological factors were analysed using multivariable Cox regression assessing time to death and recurrence. Computed tomography-estimated tumour volume change was examined in a subgroup of consecutive patients.Results Five hundred and fifty-five patients were included. Median survival was 55 months (Mandard 1–3) and 21 months (Mandard 4 and 5). In the Mandard 4 and 5 group (332 patients), comparison between complete nodal responders and persistent nodal disease showed improved survival (90 vs 18 months), recurrence rates (locoregional 14.75 vs 28.74%, systemic 24.59 vs 48.42%) and circumferential resection margin positivity (22.95 vs 68.11%). Complete nodal response independently predicted improved survival (hazard ratio 0.34 (0.16–0.74). Post-chemotherapy tumour volume reduction was greater in patients with a complete nodal response (−16.3 vs −7.7 cm3, p = 0.033) with no significant difference between Mandard groups.Conclusion Patients with a complete nodal response to chemotherapy have significantly improved outcomes despite a poor Mandard score. High Mandard score does not correspond with a non-response to chemotherapy in all cases and patients with nodal downstaging may still benefit from adjuvant chemotherapy.Subject terms: Oesophageal cancer, Surgical oncology 相似文献
15.
Marta Rozanski Valentin Neuhaus Emily Thornton Stéphanie J. E. Becker James P. Rathmell David Ring 《Journal of hand and microsurgery》2015,7(1):30-35
This study used the National Survey of Ambulatory Surgery (NSAS) database to measure the incidence of and risk factors for symptoms in the ambulatory surgery center and problems within 24 h after isolated carpal tunnel release (CTR). The NSAS contained records on 400,000 adult patients with carpal tunnel syndrome who were treated with CTR in 2006, based on ICD-9 codes. The type of anesthesia used and factors associated with symptoms and problems were sought in bivariate and multivariable statistical analyses. The mean duration of the procedure was 16 ± 8.8 min. Only 5 % were performed under local anesthesia without sedation, 45 % with IV sedation, 28 % regional anesthesia, and 19 % general anesthesia. Symptoms in the ambulatory surgery center or a problem within 24 h after discharge were recorded in 10 % of patients, all of them minor and transient, including difficulties with pain and its treatment. The strongest risk factors were male sex, age of 45 years and older, and participation of an anesthesiologist. Local anesthesia and regional anesthesia were associated with more perioperative symptoms and postoperative problems. Most CTR are performed with some sedation in the United States. CTR is a safe procedure: one in 10 patients will experience a minor issue in the perioperative or immediate postoperative period. 相似文献
16.
17.
18.
Richard Kim Elaine Tan Emily Wang Amit Mahipal Dung-Tsa Chen Biwei Cao Fadzai Masawi Cindy Machado James Yu Dae Won Kim 《The oncologist》2020,25(12):e1893-e1899
Lessons Learned
- The combination of trametinib and sorafenib has an acceptable safety profile, albeit at doses lower than approved for monotherapy.
- Maximum tolerated dose is trametinib 1.5 mg daily and sorafenib 200 mg twice daily.
- The limited anticancer activity observed in this unselected patient population does not support further exploration of trametinib plus sorafenib in patients with hepatocellular carcinoma.
19.
20.
Paul J. Devlin Brian W. McCrindle James K. Kirklin Eugene H. Blackstone William M. DeCampli Christopher A. Caldarone Ali Dodge-Khatami Pirooz Eghtesady James M. Meza Peter J. Gruber Kristine J. Guleserian Bahaaladin Alsoufi Linda M. Lambert James E. OBrien Erle H. Austin Jeffrey P. Jacobs Tara Karamlou 《The Journal of thoracic and cardiovascular surgery》2019,157(2):684-695.e8