@article{ref1,
title="Leisure time takes a toll",
journal="Michigan health and hospitals",
year="1984",
author="Terpstra, G.",
volume="20",
number="11",
pages="29-32",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0026-220X",
doi="",
url="http://dx.doi.org/"
}