Corrigendum: A comparison of online and live training of livestock farmers for an on-farm self-assessment of animal welfare - Michaelis, Sarina; Schubbert, Antje; Gieseke, Daniel; Cimer, Kornel; Zapf, Rita; Lühken, Sally; March, Solveig; Brinkmann, Jan; Schultheiß, Ute; Knierim, Ute (Frontiers in Animal Science, 2023)