Assessing the efficacy and safety of magnesium sulfate for management of autonomic nervous system dysregulation in Vietnamese children with severe hand foot and mouth disease by Phan, Q, Phung, L, Truong, K, Huynh, T, Phạm, G, Nguyen, B, Tran, Q, Huynh, V, Nguyen, T, Le, T, Le, N, Sabanathan, S, Van Doorn, H, Van Le, T, Nguyen, T, Merson, L, Nguyen, D, Geskus, R, Nguyen, H, Nguyen, C, Wills, B