Inriani, V. et al. 2022. Overview of Knowledge, Attitude and Behaviour Level among Medical Students of Universitas Sumatera Utara towards Lactobacillus Casei Strain Shirota in Probiotic Drink. Sumatera Medical Journal. 5, 2 (May 2022). DOI:https://doi.org/10.32734/sumej.v5i2.8013.