全文获取类型
收费全文 | 27446篇 |
免费 | 4410篇 |
国内免费 | 259篇 |
专业分类
耳鼻咽喉 | 807篇 |
儿科学 | 909篇 |
妇产科学 | 802篇 |
基础医学 | 2498篇 |
口腔科学 | 677篇 |
临床医学 | 3497篇 |
内科学 | 5368篇 |
皮肤病学 | 741篇 |
神经病学 | 2974篇 |
特种医学 | 1401篇 |
外科学 | 5188篇 |
综合类 | 376篇 |
现状与发展 | 2篇 |
一般理论 | 21篇 |
预防医学 | 2667篇 |
眼科学 | 684篇 |
药学 | 1456篇 |
中国医学 | 20篇 |
肿瘤学 | 2027篇 |
出版年
2023年 | 592篇 |
2022年 | 238篇 |
2021年 | 524篇 |
2020年 | 909篇 |
2019年 | 425篇 |
2018年 | 932篇 |
2017年 | 856篇 |
2016年 | 1004篇 |
2015年 | 970篇 |
2014年 | 1316篇 |
2013年 | 1577篇 |
2012年 | 1097篇 |
2011年 | 1054篇 |
2010年 | 1104篇 |
2009年 | 1230篇 |
2008年 | 1029篇 |
2007年 | 920篇 |
2006年 | 985篇 |
2005年 | 826篇 |
2004年 | 710篇 |
2003年 | 724篇 |
2002年 | 659篇 |
2001年 | 719篇 |
2000年 | 651篇 |
1999年 | 665篇 |
1998年 | 459篇 |
1997年 | 449篇 |
1996年 | 473篇 |
1995年 | 433篇 |
1994年 | 313篇 |
1993年 | 255篇 |
1992年 | 516篇 |
1991年 | 541篇 |
1990年 | 478篇 |
1989年 | 487篇 |
1988年 | 486篇 |
1987年 | 472篇 |
1986年 | 407篇 |
1985年 | 432篇 |
1984年 | 350篇 |
1983年 | 292篇 |
1982年 | 215篇 |
1979年 | 281篇 |
1978年 | 239篇 |
1977年 | 187篇 |
1976年 | 198篇 |
1974年 | 199篇 |
1973年 | 191篇 |
1972年 | 182篇 |
1969年 | 170篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Kara S. Tanaka MD Veronica R. Andaya BA Steven W. Thorpe MD Kenneth R. Gundle MD James B. Hayden MD Yee-Cheen Duong MD Raffi S. Avedian MD David G. Mohler MD Lee J. Morse MD Melissa N. Zimel MD Richard J. O'Donnell MD Andrew Fang MD Robert Lor Randall MD Tina H. Tran BS Christin New BA Rosanna L. Wustrack MD other members of Study Group FORCE 《Journal of surgical oncology》2023,127(1):148-158
2.
3.
4.
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
5.
6.
ABSTRACTCommunication between health professionals and patients is an intergroup phenomenon where the health professional has the most power and status. Over the past few decades, there has been a steady increase in the availability to patients of information about healthcare and specific diseases on the Internet. In this paper, we ask whether the use of Internet health information assists patients to manage their consultations with health professionals better and whether it alters the intergroup dynamic by providing a more equal status for patients. In this study 370 participants from Australia and Canada completed a survey that included a ‘willingness to communicate with health professionals’ scale. They also commented on their use and trust of Internet health information. Thematic analysis suggests that patients’ use of Internet health information serves as a broker between patients and their health provider in health consultations. We discuss the implications of these findings for health practitioners as they address how easier Internet access influences patient interactions with health professionals. We consider future research directions these finding provide in explaining communication behaviour in this context. 相似文献
7.
8.
Objectives
Iatrogenic injury of the Profunda Femoris Artery (PFA) at time of hip fixation surgery can increase morbidity and mortality and prolong the hospital stay. This is an injury that tends to pass unnoticed as a cause of postoperative deterioration despite being frequently reported in the literature. Our study aims to describe the anatomy of the PFA in relation to the medial femoral cortex with specific emphasis on its orientation relative to the position of a sliding hip screw side plate construct. By doing so we are able to present clear guidance to orthopaedic surgeons on how to avoid iatrogenic PFA injury at the time of hip fracture fixation.Methods
Using Computed Tomography Angiographic (CTA) studies, the course of the PFA in relation to the medial femoral cortex was traced in 44 patients (28 males and 16 females) with mean age of 65.6 years. Coronal and axial CT sections were cross-linked to specify the position of the PFA at 1?cm intervals.Results
The course of the artery could be divided into three parts relative to a fixed reference point. Proximal and distal parts of the artery were in a safer position in comparison to the middle part of the artery that was found very close to the femoral cortex and along the coronal axis of the femur (mean angle 2.9° from the femoral coronal axis and 13.8?mm from the medial femoral cortex). Using the commercially available side plate constructs, this part of the artery corresponded to the distal part of the plate (third and fourth holes).Conclusion
Special attention needs to be practiced by the operating surgeon while drilling into the third and fourth holes of the side plate. 相似文献9.