@article{ref1,
title="Melanin hyperpigmentation in South African Bantu patients with toxic psychosis",
journal="South African medical journal SAMJ",
year="1972",
author="Robins, A. H.",
volume="46",
number="43",
pages="1639-1643",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0038-2469",
doi="",
url="http://dx.doi.org/"
}