@article{ref1,
title="On placebo effects",
journal="American journal of psychiatry",
year="1977",
author="Green, B. E.",
volume="134",
number="8",
pages="935-936",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-953X",
doi="",
url="http://dx.doi.org/"
}