Kabengele, B, P Akilimali, D Kaba, P Kayembe, Z Kashongwe, and JM Kayembe. 2019. “Serum Vitamin D Levels in a Population of Adult Asthmatics in Kinshasa, Democratic Republic of Congo”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 44 (1):102-14. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/9757.