1. Evaluation of Covid-19 Surveillance in Solok Selatan District in 2021 ; Yulia Astuti, Aria Gusti, Mery Ramadhani. 2. Modelling Disease Risk Faktors for Covid-19 on District/City in West Sumatera ; Vitratul Ilahi, Masrizal Masrizal, Syafrawati Syafrawati. 3. Administrative Data Relationship with The Accuracy of Disease Diagnosis Codes of Inpatients in Pariaman Public Hospital ; Kamal Kasra,…