全文获取类型
| 收费全文 | 4132611篇 |
| 免费 | 301112篇 |
| 国内免费 | 9968篇 |
专业分类
| 耳鼻咽喉 | 56482篇 |
| 儿科学 | 135283篇 |
| 妇产科学 | 112716篇 |
| 基础医学 | 586666篇 |
| 口腔科学 | 118597篇 |
| 临床医学 | 379546篇 |
| 内科学 | 797037篇 |
| 皮肤病学 | 94123篇 |
| 神经病学 | 329776篇 |
| 特种医学 | 157328篇 |
| 外国民族医学 | 939篇 |
| 外科学 | 623473篇 |
| 综合类 | 94900篇 |
| 现状与发展 | 16篇 |
| 一般理论 | 1558篇 |
| 预防医学 | 328957篇 |
| 眼科学 | 97709篇 |
| 药学 | 302093篇 |
| 17篇 | |
| 中国医学 | 8496篇 |
| 肿瘤学 | 217979篇 |
出版年
| 2018年 | 45303篇 |
| 2017年 | 34364篇 |
| 2016年 | 39114篇 |
| 2015年 | 44175篇 |
| 2014年 | 62305篇 |
| 2013年 | 93932篇 |
| 2012年 | 125640篇 |
| 2011年 | 133933篇 |
| 2010年 | 80891篇 |
| 2009年 | 76263篇 |
| 2008年 | 124750篇 |
| 2007年 | 132975篇 |
| 2006年 | 134577篇 |
| 2005年 | 130271篇 |
| 2004年 | 125045篇 |
| 2003年 | 120290篇 |
| 2002年 | 116037篇 |
| 2001年 | 189063篇 |
| 2000年 | 194444篇 |
| 1999年 | 163656篇 |
| 1998年 | 48540篇 |
| 1997年 | 42554篇 |
| 1996年 | 42914篇 |
| 1995年 | 41435篇 |
| 1994年 | 38310篇 |
| 1993年 | 35917篇 |
| 1992年 | 129468篇 |
| 1991年 | 126262篇 |
| 1990年 | 122500篇 |
| 1989年 | 118208篇 |
| 1988年 | 108922篇 |
| 1987年 | 106921篇 |
| 1986年 | 100997篇 |
| 1985年 | 96927篇 |
| 1984年 | 72856篇 |
| 1983年 | 62046篇 |
| 1982年 | 37043篇 |
| 1981年 | 33371篇 |
| 1979年 | 66780篇 |
| 1978年 | 47626篇 |
| 1977年 | 40186篇 |
| 1976年 | 37918篇 |
| 1975年 | 40247篇 |
| 1974年 | 48455篇 |
| 1973年 | 46489篇 |
| 1972年 | 43633篇 |
| 1971年 | 40770篇 |
| 1970年 | 37718篇 |
| 1969年 | 35763篇 |
| 1968年 | 33182篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
31.
32.
33.
34.
35.
36.
Daniel J. Snyder Thomas R. Kroshus Aakash Keswani Evan B. Garden Karl M. Koenig Kevin J. Bozic David S. Jevsevar Jashvant Poeran Calin S. Moucha 《The Journal of arthroplasty》2019,34(4):613-618
Background
Nursing Home Compare (NHC) ratings, created and maintained by Medicare, are used by both hospitals and consumers to aid in the skilled nursing facility (SNF) selection process. To date, no studies have linked NHC ratings to actual episode-based outcomes. The purpose of this study was to evaluate whether NHC ratings are valid predictors of 90-day complications, readmission, and bundle costs for patients discharged to an SNF after primary total joint arthroplasty (TJA).Methods
All SNF-discharged primary TJA cases in 2017 at a multihospital academic health system were queried. Demographic, psychosocial, and clinical variables were manually extracted from the health record. Medicare NHC ratings were then collected for each SNF. For patients in the Medicare bundle, postacute and total bundle cost was extracted from claims.Results
Four hundred eighty-eight patients were discharged to a total of 105 unique SNFs. In multivariate analysis, overall NHC rating was not predictive of 90-day readmission/major complications, >75th percentile postacute cost, or 90-day bundle cost exceeding the target price. SNF health inspection and quality measure ratings were also not predictive of 90-day readmission/major complications or bundle performance. A higher SNF staffing rating was independently associated with a decreased odds for >75th percentile 90-day postacute spend (odds ratio, 0.58; P = .01) and a 90-day bundle cost exceeding the target price (odds ratio = 0.69; P = .02) but was similarly not predictive of 90-day readmission/complications.Conclusion
Results of our study suggest that Medicare's NHC tool is not a useful predictor of 90-day costs, complications, or readmissions for SNFs within our health system. 相似文献37.
38.
I. Fouzas C. Papanikolaou G. Katsanos N. Antoniadis N. Salveridis K. Karakasi S. Vasileiadou A. Fouza E. Mouloudi G. Imvrios V. Papanikolaou 《Transplantation proceedings》2019,51(2):416-420
Aims
Variations of the anatomy of donor hepatic arteries increase the number of arterial anastomoses during liver transplantation and, possibly, the incidence of hepatic artery thrombosis (HAT). In this study, we describe the arterial anatomic variations in liver grafts procured and transplanted by a single center in Greece, the techniques of arterial anastomosis, and their effect on the incidence of early HAT.Materials and Methods
From January 2013 to December 2017, the arterial anatomy of 116 grafts procured for liver transplantation were recorded, as well as the technique of arterial anastomosis and the incidence of early hepatic artery thrombosis (HAT <30 days).Results
A single hepatic artery was recorded in 72.41% of the procured grafts, an aberrant left hepatic artery (accessory or replaced) in 18 grafts (15.52%), and an aberrant right hepatic artery (accessory or replaced) in 17 grafts (14.66%), while other variations were observed in less than 1% of the procured livers. Of the 116 primary liver transplantations, 6 patients (5.17%) developed early HAT <30 days. Two of these patients (1.72%) had 1 anastomosis of the hepatic artery and 4 (3.45%) had 2 anastomoses due to anatomic variations.Conclusions
Anatomic variations of the hepatic artery in liver grafts is a common finding and increase the incidence of early HAT but not to a degree to make these grafts unusable. 相似文献39.
40.
Lara Feulner Hamed S. Najafabadi Simon Tanguay Janusz Rak Yasser Riazalhosseini 《Urologic oncology》2019,37(2):166-175