@incollection{Mak19,
author = {Jenson Mak},
title = {An Evidence-Based Review of Efficacy and Safety of Dietary, Natural Supplements and Sunlight in Vitamin D Deficiency},
booktitle = {Vitamin D Deficiency},
publisher = {IntechOpen},
address = {Rijeka},
year = {2019},
editor = {Julia Fedotova},
chapter = {5},
doi = {10.5772/intechopen.89598},
url = {https://doi.org/10.5772/intechopen.89598}
}