@inbook{1177168146,
author={Kathleen Lau and Alex Chan},
title={Caesarian section delivery due to dystocia associated with decreased vitamin D level},
booktitle={2 Minute Medicine},
publisher={McGraw Hill},
address={New York, NY},
year={2015},
url={accessmedicine.mhmedical.com/updatesContent.aspx?gbosid=554652}
}