全文获取类型
收费全文 | 55950篇 |
免费 | 4692篇 |
国内免费 | 132篇 |
专业分类
耳鼻咽喉 | 492篇 |
儿科学 | 2138篇 |
妇产科学 | 1476篇 |
基础医学 | 8063篇 |
口腔科学 | 1249篇 |
临床医学 | 7314篇 |
内科学 | 11029篇 |
皮肤病学 | 1080篇 |
神经病学 | 5532篇 |
特种医学 | 1310篇 |
外国民族医学 | 1篇 |
外科学 | 5332篇 |
综合类 | 478篇 |
一般理论 | 64篇 |
预防医学 | 6457篇 |
眼科学 | 866篇 |
药学 | 3269篇 |
2篇 | |
中国医学 | 103篇 |
肿瘤学 | 4519篇 |
出版年
2023年 | 456篇 |
2022年 | 751篇 |
2021年 | 1611篇 |
2020年 | 1125篇 |
2019年 | 1720篇 |
2018年 | 1892篇 |
2017年 | 1449篇 |
2016年 | 1596篇 |
2015年 | 1688篇 |
2014年 | 2167篇 |
2013年 | 3092篇 |
2012年 | 4272篇 |
2011年 | 4415篇 |
2010年 | 2423篇 |
2009年 | 2115篇 |
2008年 | 3504篇 |
2007年 | 3604篇 |
2006年 | 3467篇 |
2005年 | 3282篇 |
2004年 | 3154篇 |
2003年 | 2886篇 |
2002年 | 2620篇 |
2001年 | 555篇 |
2000年 | 479篇 |
1999年 | 487篇 |
1998年 | 603篇 |
1997年 | 456篇 |
1996年 | 400篇 |
1995年 | 395篇 |
1994年 | 320篇 |
1993年 | 321篇 |
1992年 | 302篇 |
1991年 | 279篇 |
1990年 | 249篇 |
1989年 | 232篇 |
1988年 | 201篇 |
1987年 | 172篇 |
1986年 | 159篇 |
1985年 | 152篇 |
1984年 | 162篇 |
1983年 | 130篇 |
1982年 | 163篇 |
1981年 | 160篇 |
1980年 | 129篇 |
1979年 | 108篇 |
1978年 | 85篇 |
1977年 | 80篇 |
1976年 | 76篇 |
1974年 | 58篇 |
1971年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Susan E. Hickman Alexia M. Torke Greg A. Sachs Rebecca L. Sudore Anne L. Myers Qing Tang Giorgos Bakoyannis Bernard J. Hammes 《Journal of pain and symptom management》2019,57(6):1143-1150.e5
ContextIt is especially important that patients are well informed when making high-stakes, preference-sensitive decisions like those on the Physician Orders for Life-Sustaining Treatment (POLST) form. However, there is currently no way to easily evaluate whether patients understand key concepts when making these important decisions.ObjectivesTo develop a POLST knowledge survey.MethodsExpert (n = 62) ratings of key POLST facts were used to select items for a POLST knowledge survey. The survey was administered to nursing facility residents (n = 97) and surrogate decision-makers (n = 112). A subset (n = 135) were re-administered the survey after a standardized advance care planning discussion to assess the scale's responsiveness to change.ResultsThe 19-item survey demonstrated adequate reliability (α = 0.72.). Residents' scores (x = 11.4, standard deviation 3.3) were significantly lower than surrogate scores (x = 14.7, standard deviation 2.5) (P < 0.001). Scores for both groups increased significantly after administration of a standardized advance care planning discussion (P < 0.001). Although being a surrogate, age, race, education, cognitive functioning, and health literacy were significantly associated with higher POLST Knowledge Survey scores in univariate analyses, only being a surrogate (P < 0.001) and being white (P = 0.028) remained significantly associated with higher scores in multivariate analyses.ConclusionThe 19-item POLST Knowledge Survey demonstrated adequate reliability and responsiveness to change. Findings suggest the survey could be used to identify knowledge deficits and provide targeted education to ensure adequate understanding of key clinical decisions when completing POLST. 相似文献
5.
6.
7.
Alejandra Gordillo Hernández Eduardo Dominguez-Adame Lanuza Auxiliadora Cano Matias Rosario Perez Huertas Katherine Maria Gallardo Rodriguez Purificacion Gallinato Perez Fernando Oliva Mompean 《World journal of gastrointestinal surgery》2015,7(8):170-173
Gangliocytic paragangliomas are rare tumors that almost exclusively occur within the second portion of the duodenum. Although these tumors generally have a benign clinical course, they have the potential to recur or metastasize to regional lymph nodes. The case report presented here describes a 57-year-old female patient with melena, progressive asthenia, anemia, and a mass in the second-third portion of the duodenum that was treated by local excision. The patient was diagnosed with a friable bleeding tumor. The histologic analysis showed that the tumor was a 4 cm gangliocytic paraganglioma without a malignant cell pattern. In the absence of local invasion or distant metastasis, endoscopic resection represents a feasible, curative therapy. Although endoscopic polypectomy is currently considered the treatment of choice, it is not recommended if the size of the tumor is > 3 cm and/or there is active or recent bleeding. Patients diagnosed with a gangliocytic paraganglioma should be closely followed-up for possible local recurrence. 相似文献
8.
9.
10.