全文获取类型
收费全文 | 307篇 |
免费 | 27篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 5篇 |
妇产科学 | 5篇 |
基础医学 | 28篇 |
口腔科学 | 4篇 |
临床医学 | 39篇 |
内科学 | 99篇 |
皮肤病学 | 17篇 |
神经病学 | 43篇 |
特种医学 | 3篇 |
外科学 | 34篇 |
预防医学 | 22篇 |
眼科学 | 8篇 |
药学 | 14篇 |
中国医学 | 1篇 |
肿瘤学 | 11篇 |
出版年
2023年 | 2篇 |
2022年 | 6篇 |
2021年 | 18篇 |
2020年 | 5篇 |
2019年 | 17篇 |
2018年 | 12篇 |
2017年 | 14篇 |
2016年 | 10篇 |
2015年 | 8篇 |
2014年 | 19篇 |
2013年 | 12篇 |
2012年 | 26篇 |
2011年 | 12篇 |
2010年 | 11篇 |
2009年 | 16篇 |
2008年 | 26篇 |
2007年 | 25篇 |
2006年 | 22篇 |
2005年 | 16篇 |
2004年 | 10篇 |
2003年 | 15篇 |
2002年 | 10篇 |
2001年 | 7篇 |
2000年 | 8篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1971年 | 1篇 |
排序方式: 共有334条查询结果,搜索用时 15 毫秒
331.
Rodríguez-Castellano E Ríos-Blanco JJ Robles-Marhuenda A Gil-Aguado A Soto-Abánades C Pérez-Valero I Royo-Orejas A Vázquez-Rodríguez JJ 《Autoimmunity》2008,41(2):140-142
Herein we report the case of a patient with antiphospholipid Syndrome (APS) and an ischemic stroke suffered while he was anticoagulated, and we discuss the usefulness of magnetic resonance angiography in the early diagnosis of such a complication. We also attempt to emphasize the great value of an individual risk evaluation when warfarin therapy is introduced. In fact, our case supports the importance of high-intensity anticoagulation in patients with multiple thrombotic recurrences, and the exceptional value that strict anticoagulation control has in this kind of patients. 相似文献
332.
333.
Lidia Sarahi Peña-Ruiz Mishel Unar-Munguía Mónica Arantxa Colchero Fernando Alarid-Escudero Rafael Pérez-Escamilla 《Maternal & child nutrition》2023,19(4):e13534
Breastfeeding has been consistently associated with higher intelligence since childhood. However, this relation could be confounded due to maternal selection bias. We estimated the association between predominant breastfeeding and intelligence in school-age children considering potential selection bias and we simulated the intelligence gap reduction between low versus higher socioeconomic status children by increasing breastfeeding. We analysed predominant breastfeeding practices (breastmilk and water-based liquids) of children 0–3 years included in the Mexican Family Life Survey (MxFLS-1). Intelligence was estimated as the z-score of the abbreviated Raven score, measured at 6–12 years in the MxFLS-2 or MxFLS-3. We predicted breastfeeding duration among children with censored data with a Poisson model. We used the Heckman selection model to assess the association between breastfeeding and intelligence, correcting for selection bias and stratified by socioeconomic status. Results show after controlling for selection bias, a 1-month increase in predominant breastfeeding duration was associated with a 0.02 SD increase in the Raven z-score (p < 0.05). The children who were predominantly breastfed for 4–6 months versus <1 month had 0.16 SD higher Raven z-score (p < 0.05). No associations were found using multiple linear regression models. Among low socioeconomic status children, increasing predominantly breastfeeding duration to 6 months would increase their mean Raven z-score from −0.14 to −0.07 SD and reduce by 12.5% the intelligence gap with high socioeconomic status children. In conclusion, predominant breastfeeding duration was significantly associated with childhood intelligence after controlling for maternal selection bias. Increased breastfeeding duration may reduce poverty-driven intelligence inequities. 相似文献
334.
Masatake Kobayashi Olivier Huttin João Pedro Ferreira Kevin Duarte Arantxa González Stephane Heymans Job A.J. Verdonschot Hans-Peter Brunner-La Rocca Pierpaolo Pellicori Andrew L. Clark Johannes Petutschnigg Frank Edelmann John G. Cleland Patrick Rossignol Faiez Zannad Nicolas Girerd the HOMAGE Trial Committees Investigators 《European journal of heart failure》2023,25(8):1284-1289