@article{ref1,
title="Vitamin A metabolism and requirements in the human studied with the use of labeled retinol",
journal="Vitamins and hormones",
year="1974",
author="Sauberlich, H. E. and Hodges, R. E. and Wallace, D. L. and Kolder, H. and Canham, J. E. and Hood, J. and Raica, N. and Lowry, L. K.",
volume="32",
number="",
pages="251-275",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0083-6729",
doi="",
url="http://dx.doi.org/"
}