Within-host evolutionary dynamics of seasonal and pandemic human influenza A viruses in young children by Han, AX, Felix Garza, ZC, Welkers, MR, Vigeveno, RM, Tran, ND, Le, TQM, Pham Quang, T, Dang, DT, Tran, TNA, Ha, MT, Nguyen, TH, Le, QT, Le, TH, Hoang, TBN, Chokephaibulkit, K, Puthavathana, P, Nguyen, VVC, Nghiem, MN, Nguyen, VK, Dao, TT, Tran, TH, Wertheim, HF, Horby, PW, Fox, A, van Doorn, HR, Eggink, D, de Jong, MD, Russell, CA