全文获取类型
收费全文 | 431篇 |
免费 | 42篇 |
国内免费 | 4篇 |
专业分类
儿科学 | 38篇 |
妇产科学 | 2篇 |
基础医学 | 34篇 |
口腔科学 | 12篇 |
临床医学 | 26篇 |
内科学 | 83篇 |
皮肤病学 | 5篇 |
神经病学 | 4篇 |
特种医学 | 51篇 |
外科学 | 69篇 |
综合类 | 12篇 |
预防医学 | 23篇 |
眼科学 | 57篇 |
药学 | 19篇 |
肿瘤学 | 42篇 |
出版年
2022年 | 2篇 |
2021年 | 2篇 |
2020年 | 2篇 |
2019年 | 3篇 |
2018年 | 8篇 |
2017年 | 7篇 |
2016年 | 6篇 |
2015年 | 12篇 |
2014年 | 21篇 |
2013年 | 13篇 |
2012年 | 7篇 |
2011年 | 10篇 |
2010年 | 14篇 |
2009年 | 25篇 |
2008年 | 15篇 |
2007年 | 17篇 |
2006年 | 21篇 |
2005年 | 15篇 |
2004年 | 9篇 |
2003年 | 18篇 |
2002年 | 15篇 |
2001年 | 16篇 |
2000年 | 9篇 |
1999年 | 6篇 |
1998年 | 21篇 |
1997年 | 28篇 |
1996年 | 28篇 |
1995年 | 17篇 |
1994年 | 26篇 |
1993年 | 16篇 |
1992年 | 7篇 |
1991年 | 8篇 |
1990年 | 4篇 |
1989年 | 9篇 |
1988年 | 6篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 5篇 |
1984年 | 2篇 |
1983年 | 4篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 6篇 |
1976年 | 5篇 |
排序方式: 共有477条查询结果,搜索用时 312 毫秒
91.
92.
93.
SURGISIS-assisted surgical site control in the delayed repair of a complex bile duct injury after laparoscopic cholecystectomy 总被引:1,自引:0,他引:1
Evan S. Ong M.D. W. Scott Helton M.D. David Jho B.A. N. Joseph Espat M.D. M.S. F.A.C.S. 《Journal of gastrointestinal surgery》2006,10(2):202-206
Although laparoscopic cholecystectomy has revolutionized the surgical approach to patients with gallbladder disease, it has
also brought a marked increase in the incidence of complex and serious bile duct injuries. Many of these major injuries represent
a major technical challenge for even the most seasoned hepatobiliary-trained surgeon. Herein, we present a case outlining
the algorithmic treatment approach for delayed-presentation complex biliary injury and report on the novel use of small intestinal
submucosal biomaterial for surgical site control in the staged repair of a complex biliary injury (Strasberg E4) after laparoscopic cholecystectomy.
Presented at the Fifth Biennial Meeting of the American Hepato-Pancreato-Biliary Association, Fort Lauderdale, Florida, April
14–17, 2005. 相似文献
94.
The following SSAT/AHAPBA symposium summary is based on a more comprehensive review of the topic by Alseidi A, Helton WS, Espat NJ. Does the literature support an indication for hepatic metastasectomy other than for colorectal primary? J Gastrointest Surg in press. 相似文献
95.
Primitive neuroectodermal tumours of the cerebrum 总被引:1,自引:1,他引:0
Summary Eighteen cases of cerebral tumour composed partly or totally of primitive embryonal cells are reported. These lesions comprise 2.8% of all primary cerebral hemisphere tumours in the histopathology files of The Royal Marsden Hospital between 1971 and 1980 inclusive. Most exhibited some degree of differentiation towards neuronal or glial elements and, as more than one type of differentiation was often present in the same lesion, we agree with others that the term primitive neuroectodermal tumour (PNET) is more appropriate to describe these lesions than terms based on histogenesis. The extent of the primitive component varied, but usually accounted for more than 80% of the tumour. Although the tumours bear some similarities to posterior fossa medulloblastomas, they exhibit important differences in histology, immunohistology, natural history and response to treatment. Nearly all PNETs examined expressed some glial fibrillary acidic (GFAP) both in primitive areas and zones of astrocytic differentiation. GFAP staining may thus be of value in distinguishing PNETs from undifferentiated non-neurogenic tumours. Of 14 patients referred for radiotherapy, the survival rate at 3 years was 29% (\414) and 5 years 25% (\312). Patients with tumours in which at least 90% of the tissue was undifferentiated exhibited an extremely poor prognosis with none of 9 patients still alive at 3 years in contrast to 3 of 5 patients (60%) with tumours showing less than 90% undifferentiation. Radical tumour removal, where feasible, followed by irradiation of the whole cerebrospinal axis is recommended. Adjuvant chemotherapy with such agents as CCNU and Vincristine may be of value: the 3 long term survivors in the present series (7–11 years), including one who presented disseminated intracranial disease, received such adjuvant treatment. 相似文献
96.
97.
NJ Bishop JA dePriester TJ Cole A Lucas 《Acta paediatrica (Oslo, Norway : 1992)》1992,81(6-7):463-468
Bone width and mineral content were measured in 420 healthy Cambridge children aged 4 to 10 years using single photon absorptiometry. The results are expressed first in the form of standard centile charts, with additional prediction charts which provide body-size-adjusted estimates for the measurements, and interpretation centiles for comparing these estimates with the actual measurements. The values obtained are similar to those reported for American children aged five to six years after adjusting for body-size differences. We suggest that appropriate application of these prediction charts will facilitate the use of single photon absorptiometry in monitoring and treating children who have disorders of bone growth and mineralization. 相似文献
98.
99.
100.
ETD Hoey D Gopalan V Ganesh SKB Agrawal NJ Screaton 《Journal of Medical Imaging and Radiation Oncology》2009,53(3):261-270
Atrial septal defects are associated with significant morbidity and mortality. Echocardiography is the first‐line imaging modality, but MR and CT imaging can provide complimentary information, especially for the detection of associated anomalies and for assessing changes in the pulmonary vasculature. The aim of this pictorial essay is to review the spectrum of atrial septal defects, with particular reference to their cross‐sectional imaging appearances and issues pertaining to management. 相似文献