Nur Hayati, Fitriana Puspitarani, Andri Setyo Dwi Nugroho, and Citra Indriani. 2021. “COVID-19 Cluster Investigation After Choir Recording at Church X Bantul Regency in 2021”. BKM Public Health and Community Medicine 37 (11 Suppl.). https://doi.org/10.22146/bkm.v0i0.3154.