@article{ref1,
title="Development of a school health information system",
journal="American journal of public health",
year="1975",
author="Johansen, S. and Orthoefer, J. E.",
volume="65",
number="11",
pages="1203-1207",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}