@article{ref1,
title="Depressive illness in childhood presenting as severe headache",
journal="American journal of diseases of children (1960)",
year="1970",
author="Ling, Wenhua and Oftedal, G. and Weinberg, W.",
volume="120",
number="2",
pages="122-124",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0002-922X",
doi="",
url="http://dx.doi.org/"
}