Chanbunyavit, Aphitchaya, Vitoon Jularattanaporn, and Thamthiwat Nararatwanchai. “Probiotic Supplementations Preserve Protective Immunity Against SARS-CoV-2 Spike Protein After a Triple Combination of COVID-19 Vaccination”. Asian Medical Journal and Alternative Medicine 22, no. 3 (December 28, 2022): 230–237. Accessed November 23, 2024. https://asianmedjam.com/index.php/amjam/article/view/1270.