@article{ref1,
title="Measuring the incidence of self-injury: some methodological and design considerations",
journal="American journal of orthopsychiatry",
year="1973",
author="Whitehead, P. C. and Johnson, F. G. and Ferrence, R.",
volume="43",
number="1",
pages="142-148",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9432",
doi="",
url="http://dx.doi.org/"
}