求下三篇论文，每篇10个论坛币

【作者(必填)】
Ko SQ, Strom JB, Shen C, Yeh RW
【文题(必填)】
Mortality, Length of Stay, and Cost of Weekend Admissions【年份(必填)】
2018
【全文链接或数据库名称(选填)】https://europepmc.org/article/med/29370319


【作者(必填)】
M Higgins, J Nightingale, K Sehat
【文题(必填)】
Is there a ‘weekend effect’ in elective lower limb arthroplasty?【年份(必填)】
2021
【全文链接或数据库名称(选填)】https://publishing.rcseng.ac.uk/doi/pdf/10.1308/rcsann.2020.7029



【作者(必填)】
Marco Ghiani, Sabrina Mueller, Ulf Maywald, Thomas Wilke
【文题(必填)】
Hospitalized with stroke at the weekend: Higher cost and risk of early death?【年份(必填)】
2021
【全文链接或数据库名称(选填)】https://journals.sagepub.com/doi/abs/10.1177/1747493021992597

请按照版规https://bbs.pinggu.org/thread-4820326-1-1.html，规范求助格式，一帖求一文，具体解释见帖子：https://bbs.pinggu.org/thread-4492707-1-1.html