Corrigendum: Physical Activity as a Preventive Lifestyle Intervention Acts Through Specific Exosomal miRNA Species—Evidence From Human Short- and Long-Term Pilot Studies - Garai, Kitti; Adam, Zoltan; Herczeg, Robert; Banfai, Krisztina; Gyebrovszki, Adam; Gyenesei, Attila; Pongracz, Judit E.; Wilhelm, Marta; Kvell, Krisztian (Frontiers in Physiology, 2021)