@article{ref1,
title="Retraction notice to "An open-label trial comparing alendronate and alphacalcidol in reducing falls and hip fractures in disabled stroke patients" [Journal of stroke and cerebrovascular diseases, volume 20, issue 1, 2011, pages 41-46]",
journal="Journal of stroke and cerebrovascular diseases",
year="2019",
author="Sato, Yoshihiro and Iwamoto, Jun and Honda, Yoshiaki",
volume="28",
number="11",
pages="e104426-e104426",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1052-3057",
doi="10.1016/j.jstrokecerebrovasdis.2019.104426",
url="http://dx.doi.org/10.1016/j.jstrokecerebrovasdis.2019.104426"
}