Widdowson Marc-Alain, Bresee Joseph S
Division of Global Health Protection, Center for Global Health, US Centers for Disease Control and Prevention, Nairobi 00621, Kenya.
Influenza Division, National Center for Immunization and Respiratory Diseases, US Centers for Disease Control and Prevention, Atlanta, GA, USA.
Lancet Respir Med. 2017 Sep;5(9):674-676. doi: 10.1016/S2213-2600(17)30290-4. Epub 2017 Jul 20.