Text and Data Mining valid from 2019-04-10
First Online: 10 April 2019
Compliance with Ethical Standards
: Aysu Selcuk, Kai Zhen Yap, Chee Liang Wong, Jing Xi Yang, Pei Chean Yong, Sui Yung Chan, and Christine B. Teng have no conflicts of interest relevant to the content of this article.
: The management of participating nursing homes provided written informed consent. The Institutional Review Board of the National University of Singapore approved the protocol of the study.