@article{ref1,
title="Comment on Si et al. (2021) "Predictive performance of 7 frailty instruments for short-term disability, falls and hospitalization among Chinese community-dwelling older adults: a prospective cohort study"",
journal="International journal of nursing studies",
year="2021",
author="Liu, Hongpeng and Jiao, Jing and Zhu, Minglei and Wu, Xinjuan and Chen, Wei",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0020-7489",
doi="10.1016/j.ijnurstu.2021.104038",
url="http://dx.doi.org/10.1016/j.ijnurstu.2021.104038"
}