@article{ref1,
title="Having witnesses present",
journal="Deutsches Ärzteblatt International",
year="2010",
author="Specht, Ulrich and Thorbecke, Rupprecht and Coban, Ingrid",
volume="107",
number="43",
pages="767; author reply 767-8",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1866-0452",
doi="10.3238/arztebl.2010.0767a",
url="http://dx.doi.org/10.3238/arztebl.2010.0767a"
}