@article{ref1,
title="Risks of high altitude trekking",
journal="Indian pediatrics",
year="1998",
author="Gupta, P.",
volume="35",
number="12",
pages="1254-1255",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-6061",
doi="",
url="http://dx.doi.org/"
}