全文获取类型
收费全文 | 28692篇 |
免费 | 1179篇 |
国内免费 | 230篇 |
专业分类
耳鼻咽喉 | 253篇 |
儿科学 | 547篇 |
妇产科学 | 578篇 |
基础医学 | 2845篇 |
口腔科学 | 671篇 |
临床医学 | 2031篇 |
内科学 | 8154篇 |
皮肤病学 | 359篇 |
神经病学 | 2445篇 |
特种医学 | 1070篇 |
外科学 | 5236篇 |
综合类 | 55篇 |
一般理论 | 5篇 |
预防医学 | 1108篇 |
眼科学 | 545篇 |
药学 | 1637篇 |
5篇 | |
中国医学 | 57篇 |
肿瘤学 | 2500篇 |
出版年
2024年 | 140篇 |
2023年 | 324篇 |
2022年 | 616篇 |
2021年 | 1062篇 |
2020年 | 649篇 |
2019年 | 870篇 |
2018年 | 1005篇 |
2017年 | 728篇 |
2016年 | 882篇 |
2015年 | 898篇 |
2014年 | 1217篇 |
2013年 | 1496篇 |
2012年 | 2281篇 |
2011年 | 2164篇 |
2010年 | 1249篇 |
2009年 | 1202篇 |
2008年 | 1875篇 |
2007年 | 1815篇 |
2006年 | 1704篇 |
2005年 | 1693篇 |
2004年 | 1591篇 |
2003年 | 1359篇 |
2002年 | 1224篇 |
2001年 | 124篇 |
2000年 | 124篇 |
1999年 | 167篇 |
1998年 | 207篇 |
1997年 | 165篇 |
1996年 | 156篇 |
1995年 | 150篇 |
1994年 | 126篇 |
1993年 | 115篇 |
1992年 | 89篇 |
1991年 | 55篇 |
1990年 | 63篇 |
1989年 | 45篇 |
1988年 | 38篇 |
1987年 | 34篇 |
1986年 | 42篇 |
1985年 | 36篇 |
1984年 | 34篇 |
1983年 | 32篇 |
1982年 | 49篇 |
1981年 | 29篇 |
1980年 | 27篇 |
1979年 | 17篇 |
1978年 | 12篇 |
1976年 | 11篇 |
1975年 | 8篇 |
1974年 | 11篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
Francesco Caiazza Katarzyna Oficjalska Miriam Tosetto James J. Phelan Sinéad Noonan Petra Martin Kate Killick Laura Breen Fiona ONeill Blathnaid Nolan Simon Furney Robert Power David Fennelly Charles S. Craik Jacintha OSullivan Kieran Sheahan Glen A. Doherty Elizabeth J. Ryan 《The American journal of pathology》2019,189(10):1916-1932
94.
Swallowing,voice, and quality of life after supratracheal laryngectomy: Preliminary long‐term results
下载免费PDF全文
![点击此处可从《Head & neck》网站下载免费的PDF全文](/ch/ext_images/free.gif)
95.
96.
Albumin administration prevents the onset of pressure ulcers in intensive care unit patients
下载免费PDF全文
![点击此处可从《International wound journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Raffaele Serra Raffaele Grande Gianluca Buffone Luca Gallelli Santo Caroleo Francesco Tropea Bruno Amantea Stefano de Franciscis 《International wound journal》2015,12(4):432-435
Pressure ulcers (PUs) are a common problem in critically ill patients admitted to the intensive care units (ICUs) and they account for more than 70% of patients with low serum albumin at admission. The aim of this study was to test the efficacy of intravenous administration of albumin in patients with low serum albumin < 3·3 g/dl. In a 1‐year period, a total of 73 patients were admitted to the ICU (males 45, 61·64% and females 28, 38·36%); of these, 21 patients were admitted with hypoalbuminaemia (serum albumin < 3·3 g/dl) and randomised into two groups: 11 patients were treated with 25 g intravenous albumin for the first 3 days within the first week of ICU stay (group A) and 10 patients did not receive albumin (group B). Three patients (27·27%) showed the onset of PUs in group A, whereas seven patients (70%) showed the onset of PUs within the first 7 days of stay in group B. Moreover, ulcers of group B were more severe than those of group A. This study shows that intravenous administration of albumin reduces the onset of PUs in patients admitted to the ICU and in some cases it also reduces the risk of progression to advanced stages of PUs. 相似文献
97.
Cristina Capittini Francesco Messina Fabrizio Puglisi Maria Azzaro Sebastiana Toscano Annalisa De Silvestri Carmine Tinelli Grazia Sortino 《Human immunology》2018,79(1):5-12
A geographical stratification of Killer Immunoglobulin-like Receptors (KIR) has been reported worldwide. We first analyzed the distribution of 15 KIR genes in a sample of 50 East-Sicilians (ES). We used a Principal Component Analysis (PCA) to compare the KIR genetic content among ES and 10 modern populations who are descendants of the ancient invaders of Sicily: Spanish, French, Norwegians, Swedes, Finns, Tunisians, Moroccans, Arabs, Greeks, Turks. We also included a sample of Sardinians, and Senegalese (as outlier group). Then, we also compared the HLA-A, HLA-B and HLA-C allelic frequencies among ES and the same populations investigated for KIR. As to HLA-A and HLA-B polymorphisms, ES are close to Greek population who invaded the island for long time until 827 CE; while HLA-C and KIR distribution in ES are close to Spanish population that invaded Sicily (and Sardinia) starting from 1283. As to KIR, ES are close to Spanish and Sardinians. The immunogenetic fingerprint of ES may be the finely balanced result of the invasions that overwhelmed Sicily over the centuries. 相似文献
98.
Antonio Pecoraro Liliana Nappi Ludovica Crescenzi Francesco P. D’Armiento Arturo Genovese Giuseppe Spadaro 《Journal of clinical immunology》2018,38(1):67-76
Common variable immunodeficiency (CVID) is a primary immunodeficiency characterized by reduced immunoglobulin serum levels and absent or impaired antibody production. Clinical manifestations, including infections, inflammatory and autoimmune diseases, and malignancies, also involve various segments of the gastrointestinal tract. Chronic diarrhea is one of the most common gastrointestinal symptoms and may cause a wide spectrum of potentially life-threatening conditions as malabsorption and protein-energy malnutrition. We describe three female CVID adult patients presenting with chronic diarrhea, weight loss, and protein-energy malnutrition due to different underlying conditions. Our review of the literature explores the various gastrointestinal involvements in CVID and points out several histopathological findings proper of the disease, thus highlighting the relevance of the endoscopic and histological assessment in CVID patients presenting with chronic diarrhea. 相似文献
99.
100.
Francesca Patriarca Benedetto Bruno Hermann Einsele Francesco Spina Luisa Giaccone Vittorio Montefusco Miriam Isola Chiara Nozzoli Andrea Nozza Fortunato Morabito Paolo Corradini Renato Fanin 《Biology of blood and marrow transplantation》2018,24(2):406-409
We report the long-term clinical outcomes of a retrospective multicenter study that enrolled 169 patients with multiple myeloma (MM) in first relapse after failing autologous stem cell transplantation (SCT). After HLA typing at relapse, 79 patients with a suitable donor, 72 (91%) of whom eventually underwent salvage allogeneic SCT (allo-SCT), were compared with 90 patients without a donor who were treated with multiple lines of salvage treatment with bortezomib and/or immunomodulatory agents. At a median follow-up of 30 months (range, 2-180 months) for all patients and 110 months (range, 38-180 months) for surviving patients, 7-year progression-free survival (PFS) was 18% in the donor group and 0% in the no-donor group (hazard ratio [HR], 2.495; 95% confidence interval [CI], 1.770-3.517; P?<?.0001). Seven-year overall survival (OS) was 31% in the donor group and 9% in the no-donor group (HR, 1.835; 95% CI, 1.306-2.577; P?<?.0001). By multivariate analysis, chemosensitivity to salvage treatments and presence of a suitable donor were significantly associated with better PFS and OS. The long-term follow-up of this study confirms the significant PFS benefit and provides new evidence of an OS advantage for patients with MM who have a suitable donor and undergo allo-SCT. Allo-SCT should be considered as a treatment option in young relapsed patients with high-risk disease features after first-line treatment. 相似文献