Adamantane-Resistant Influenza A Viruses in the World (1902-2013): Frequency and Distribution of M2 Gene Mutations Dong, Guoying ; Peng, Chao ; Luo, Jing ; Wang, Chengmin ; Han, Le ; Wu, Bin ; Ji, Guangju ; He, Hongxuan Abstract Publication: PLoS ONE Pub Date: March 2015 DOI: 10.1371/journal.pone.0119115 Bibcode: 2015PLoSO..1019115D