Hand Hygiene Program Decreases School Absenteeism Due to Upper Respiratory Infections  Azor‐Martinez, E., Cobos‐Carrascosa, E., Seijas‐Vazquez, M. L., Fernández‐Sánchez, C., Strizzi, J. M., Torres‐Alegre, P., ... & Gimenez‐Sanchez, F. (2016). Hand hygiene program decreases school absenteeism due to upper respiratory infections. Journal of School Health, 86(12), 873-881.