Herlina, Nina, Bintang Yinke Magdalena Sinaga, Parluhutan Siagian, and Erna Mutiara. 2022. “Association Between Vitamin D Levels With Mdr-Tb Patients With Household Contacts And Healthy People As Comparison ”. Proceedings of Malikussaleh International Conference on Health and Disaster Medicine (MICOHEDMED) 1 (1):65-75. https://doi.org/10.29103/micohedmed.v1i1.20.