Zumaraga, Mark Pretzel, et al. “Next Generation Sequencing of 502 Lifestyle and Nutrition Related Genetic Polymorphisms Reveals Independent Loci for Low Serum 25-Hydroxyvitamin D Levels Among Adult Respondents of the 2013 Philippine National Nutrition Survey”. Journal of the ASEAN Federation of Endocrine Societies, vol. 36, no. 1, Apr. 2021, pp. 56-63, doi:10.15605/jafes.036.01.08.