“Prevalence and correlates of chronic diseases in an elderly population: A community-based survey in Haikou,” by Chanjuan Zhao, Liping Wong, Qing Zhu, and Hao Yang (PLoS ONE 13(6): e0199006. doi.org/10.1371/journal.pone.0199006, XML, HTML, and .pdf format, 11p.).
journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0199006
