Corrigendum: Probiotics Reduce Health Care Cost and Societal Impact of Flu-Like Respiratory Tract Infections in the USA: An Economic Modeling Study - Lenoir-Wijnkoop, Irene; Merenstein, Dan; Korchagina, Daria; Broholm, Christa; Sanders, Mary Ellen; Tancredi, Dan (Frontiers in Pharmacology, 2019)