1. Kateřina Sidiropulu-Janků is senior researcher at the Institute for Applied Research on Ageing, Carinthia University of Applied Sciences, Primoschgasse 8, 9020, Klagenfurt am Wörthersee, Austria.
2. Jana Obrovská is assistant professor at the Department of Education, Faculty of Education, Masaryk University, Poříčí 7, 603 00, Brno, Czechia.