@article{ref1,
title="A challenge to healthy aging: Limited social participation in old age",
journal="Aging and disease",
year="2021",
author="Leung, A.Y.M. and Molassiotis, A. and Carino, D.A.",
volume="12",
number="7",
pages="1536-1538",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="2152-5250",
doi="10.14336/AD.2021.02018",
url="http://dx.doi.org/10.14336/AD.2021.02018"
}