全文获取类型
收费全文 | 2047433篇 |
免费 | 149694篇 |
国内免费 | 3138篇 |
专业分类
耳鼻咽喉 | 29564篇 |
儿科学 | 64089篇 |
妇产科学 | 54272篇 |
基础医学 | 290122篇 |
口腔科学 | 58021篇 |
临床医学 | 178122篇 |
内科学 | 405820篇 |
皮肤病学 | 43833篇 |
神经病学 | 159679篇 |
特种医学 | 81255篇 |
外国民族医学 | 725篇 |
外科学 | 322856篇 |
综合类 | 42107篇 |
现状与发展 | 2篇 |
一般理论 | 576篇 |
预防医学 | 146968篇 |
眼科学 | 46032篇 |
药学 | 155127篇 |
5篇 | |
中国医学 | 4207篇 |
肿瘤学 | 116883篇 |
出版年
2018年 | 20159篇 |
2017年 | 15475篇 |
2016年 | 17101篇 |
2015年 | 19334篇 |
2014年 | 26753篇 |
2013年 | 40283篇 |
2012年 | 55137篇 |
2011年 | 58087篇 |
2010年 | 34723篇 |
2009年 | 33188篇 |
2008年 | 56228篇 |
2007年 | 59845篇 |
2006年 | 60707篇 |
2005年 | 58818篇 |
2004年 | 57351篇 |
2003年 | 55450篇 |
2002年 | 54461篇 |
2001年 | 107532篇 |
2000年 | 111602篇 |
1999年 | 94226篇 |
1998年 | 23893篇 |
1997年 | 21355篇 |
1996年 | 21795篇 |
1995年 | 20507篇 |
1994年 | 19229篇 |
1993年 | 17770篇 |
1992年 | 73336篇 |
1991年 | 71162篇 |
1990年 | 69077篇 |
1989年 | 66552篇 |
1988年 | 61025篇 |
1987年 | 59774篇 |
1986年 | 55740篇 |
1985年 | 53492篇 |
1984年 | 39179篇 |
1983年 | 33047篇 |
1982年 | 18258篇 |
1981年 | 16332篇 |
1979年 | 34911篇 |
1978年 | 23838篇 |
1977年 | 20416篇 |
1976年 | 18410篇 |
1975年 | 20111篇 |
1974年 | 23814篇 |
1973年 | 22726篇 |
1972年 | 21210篇 |
1971年 | 19679篇 |
1970年 | 18639篇 |
1969年 | 17158篇 |
1968年 | 15559篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
Koel Dutt P N Agarwal Rajdeep Singh Vikas Singh Tomar 《The Indian journal of surgery》2015,77(1):62-64
Haemophilia is a common cause of genetically inherited bleeding disorders. Pseudotumours occur in 1–2 % of persons with severe forms of haemophilia. These are a result of repeated haemorrhage into soft tissues, subperiosteum or a site of bone fracture with inadequate resorption of the extravasated blood. There are a number of therapeutic alternatives for this dangerous condition: surgical removal, percutaneous management, irradiation, embolization etc. In this case report, we describe the natural history, clinical course and successful surgical management of a patient with haemophilia who presented with a massive pseudotumour. We also briefly review the relevant literature on the various therapeutic modalities that have been implemented in the management of this rare complication. Though surgeons may be averse to operate on haemophiliacs, primary surgical management as done in our case may prove to be the definitive treatment option for such patients. 相似文献
4.
5.
6.
F. Fruzzetti G. Palla A. Sbrana T. Simoncini M. R. Sessa 《Gynecological endocrinology》2020,36(10):938-940
AbstractObjective: To understand the origin of extremely high gonadotropin levels in a perimenopausal woman.Methods: A 52-year-old woman with a 2?months of amenorrhea followed spontaneous menstrual cycles recovery was referred to our outpatient clinic with elevated follicle-stimulating hormone (FSH, 483 mUI/ml), luteinizing hormone (LH, 475 mUI/ml) and prolactin (PRL, 173?ng/ml). She was known to take levosulpiride. The gonadotropin levels did not fit with the clinical features.Results: A gonadotroph tumor was ruled out. Further analysis confirmed constantly high FSH, LH and PRL levels. The measurements were repeated using different analytical platforms with different results. After serial dilutions, nonlinearity was present suggesting an immunoassay interference. After post-polyethylene glycol recovery, hormone levels appeared in the normal range. Anti-goat antibodies were recognized in the serum of the patient.Conclusions: This case report shows a case of falsely abnormal high gonadotropin and PRL levels in a woman during menopause transition. In the clinical practice the evaluation of gonadotropin profile is not recommended at this age, but the abnormal levels stimulated further evaluation. An interference in the assay due to anti-goat antibodies resulted in abnormally high level of FSH and LH. A strict collaboration between clinicians and the laboratory is needed, when laboratory findings do not correspond to clinical findings. 相似文献
7.
8.
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
9.