全文获取类型
收费全文 | 1697篇 |
免费 | 90篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 14篇 |
儿科学 | 142篇 |
妇产科学 | 37篇 |
基础医学 | 123篇 |
口腔科学 | 27篇 |
临床医学 | 108篇 |
内科学 | 302篇 |
皮肤病学 | 50篇 |
神经病学 | 108篇 |
特种医学 | 204篇 |
外科学 | 314篇 |
综合类 | 54篇 |
预防医学 | 58篇 |
眼科学 | 52篇 |
药学 | 119篇 |
中国医学 | 3篇 |
肿瘤学 | 77篇 |
出版年
2023年 | 7篇 |
2022年 | 22篇 |
2021年 | 39篇 |
2020年 | 24篇 |
2019年 | 34篇 |
2018年 | 55篇 |
2017年 | 35篇 |
2016年 | 38篇 |
2015年 | 42篇 |
2014年 | 63篇 |
2013年 | 86篇 |
2012年 | 114篇 |
2011年 | 118篇 |
2010年 | 70篇 |
2009年 | 63篇 |
2008年 | 90篇 |
2007年 | 85篇 |
2006年 | 67篇 |
2005年 | 66篇 |
2004年 | 41篇 |
2003年 | 35篇 |
2002年 | 38篇 |
2001年 | 32篇 |
2000年 | 47篇 |
1999年 | 20篇 |
1998年 | 26篇 |
1997年 | 46篇 |
1996年 | 29篇 |
1995年 | 25篇 |
1994年 | 21篇 |
1993年 | 18篇 |
1992年 | 23篇 |
1991年 | 15篇 |
1990年 | 15篇 |
1989年 | 19篇 |
1988年 | 21篇 |
1987年 | 27篇 |
1986年 | 26篇 |
1985年 | 20篇 |
1984年 | 16篇 |
1983年 | 12篇 |
1982年 | 15篇 |
1981年 | 15篇 |
1980年 | 13篇 |
1979年 | 3篇 |
1978年 | 8篇 |
1977年 | 7篇 |
1976年 | 9篇 |
1975年 | 7篇 |
1967年 | 3篇 |
排序方式: 共有1792条查询结果,搜索用时 19 毫秒
31.
32.
33.
34.
35.
36.
Mortality in sickle cell disease is high at young age group. So it is necessary to find out the cause of death in young patients with sickle cell disease. We are presenting 5 cases of sudden death in young adults with undiagnosed sickle cell disease. The provocative factors for those terminal events were vasoocclusive crisis. In our patients crisis was secondary to fever (infection), conductive arrhythmia, cardiovascular collapse, post partum shock and hemorrhage. On microscopic examination of viscera, not a single patient showed signs of chronic organ damage, sequestration crisis or acute chest syndrome, which are the common causes of death in sickle cell disease. 相似文献
37.
Makoto Kaneko Takuya Aoki Ryuichi Ohta Machiko Inoue Rakesh N. Modi 《Asia Pacific family medicine》2018,17(1):11
Background
As research in family medicine covers varied topics, multiple methodologies such as qualitative research (QR) and mixed methods research (MMR) are crucial. However, we do not know about the difference in the proportion of QR or MMR between Japan, the UK and the US. This knowledge is needed to shape future research within countries with developing primary care such as Japan and other Asian countries. This study aims to describe the use of QR and MMR in Japanese primary care and compare this to the UK and US; then to make informed recommendations for primary care research.Methods
A repeated cross-sectional study (2012–2016) based on the abstracts submitted to the annual conferences of the Japanese Primary Care Association in Japan, the Royal College of General Practitioners in the UK, and the North American Primary Care Research Group in the US and other North American countries. The proportions of QR/MMR among all the posters and paper presentations for each of these three conferences were assessed. Also examined were trends and types of qualitative techniques for all three countries and participants/settings for Japan.Results
There were 1080 abstracts for Japan, 575 for UK and 3614 for US conferences. QR/MMR proportions were 7.5%, 15.1% and 28.1%, respectively. Japan’s proportion was lower than that of UK and US (p?<?0.001). The proportion was increasing over time for the UK (p?=?0.02). Steps for coding and analyses was most popular for Japan, thematic analysis for the UK and grounded theory for the US. Primary care doctors and hospitals were the commonest contexts for Japan.Conclusions
QR and MMR were not as popular in primary care in Japan compared to the UK and the US, whereas their use was increasing in the UK. Approaches, participants and settings may differ among these countries. Education and promotion of QR/MMR and multi-disciplinary collaborations need to be recommended in Japan with developing primary care.38.
Futility has been a contentious topic in medicine for several decades. Surgery in critical or end-of-life situations often raises difficult questions about futility. In this article, we discuss the definition of futility, methods for resolving futility disputes, and some ways to reframe the futility debate to a more fruitful discussion about the goals of care, better communication between surgeon and patient/surrogate, and palliative surgical care. Many definitions of futile therapy have been discussed. The most controversial of these is “qualitative futility” which describes a situation in which the treatment provided is likely to result in an unacceptable quality of life. This is an area of continued controversy because it has been impossible to identify universally held beliefs about acceptable quality of life. Many authors have described methods for resolving futility disputes, including community standards and legalistic multi-step due process protocols. Others, however, have abandoned the concept of futility altogether as an unhelpful term. Reframing the issue of futility as one of inadequate physician–patient communication, these authors have advocated for methods of improving communication and strengthening the patient–physician relationship. Finally, we discuss the utilization of consultants who may be of use in resolving futility disputes: ethics committees, palliative care specialists, pastoral care teams, and dedicated patient advocates. Involving these specialists in a futility conflict can help improve communication and provide invaluable assistance in arriving at the appropriate treatment decision. 相似文献
39.
Jin-Ho Hwang Hitesh N. Modi Seung-Woo Suh Jae-Hyuk Yang Jae-Young Hong 《European spine journal》2014,23(3):543-549
Purpose
To compare radiological and clinical results in patients operated for neuromuscular scoliosis with pelvic fixation using high-modularity spinopelvic screw (HMSP) designed by authors.Methods
Of 54 patients with neuromuscular scoliosis, group 1 comprised of 27 patients with conventional pelvic fixation; and group 2 comprised of 27 patients using HMSP. Results were evaluated radiologically and functionally. We compared preoperative and postoperative complications, especially the loosening or breakage of spinopelvis fixation device, failure of fixation, and the change of shadow around the spinopelvis fixation device.Results
There was no difference of correctional power, preoperative average Cobb’s angle of each group was 79.8 and 75 to postoperative 30.2 and 28.3 (P < 0.05). Pelvic obliquity improved from average 18.3°–8.9° in group I and average 24.3°–12.5° in group II (P < 0.05). However, there was no difference between two groups (P > 0.05). Average blood loss was 2,698 ml in group 1 and 2,414.8 ml in group 2 (P > 0.05). Average operative time was 360 min in group 1 and 332 min in group 2 (P = 0.30). There was no difference found between two groups regarding gait and functional evaluation. On the all cases of group 1 and 2, the change of shadow around the spinopelvis fixation device was observed. There was one case of the fracture of spinopelvis fixation device in group I.Conclusion
There was no difference of Cobb’s angle and correctional power between the groups using HMSP when compared with the group using standard spinopelvis fixation device. Therefore, HMSP can be used more effectively in case of neuromuscular scoliosis. 相似文献40.
Anu Gupta Vishal Jogi Manoj Kumar Goyal Manish Modi Dheeraj Khurana 《Annals of Indian Academy of Neurology》2014,17(4):426-428
Chronic aseptic meningitis is a rare manifestation of systemic lupus erythematosus (SLE). Apart from immunological causes and drugs, the aseptic meningitis group can include some unidentified viral infections that cannot be detected by routine microbiological testing. It is imperative to do complete cerebrospinal fluid (CSF) workup before implicating the symptoms to disease activity or drugs, as untreated infections cause significant mortality in SLE. We present a case of young female with SLE who presented with chronic meningitis of an uncommon etiology. 相似文献