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Wang PC, Gussekloo J, Arai Y, Abe Y, Blom JW, Duncan R, Jagger C, Kerse N, Martin-Ruiz C, Palapar L, den Elzen WPJ.Wang PC, et al. Among authors: den elzen wpj.BMC Geriatr. 2021 Aug 9;21(1):457. doi: 10.1186/s12877-021-02389-2.BMC Geriatr. 2021.PMID: 34372781Free PMC article.