Ľuba Ľubica
https://www.badatel.net/nemecka-neurologicka-varuje-pred-ruskami-nedostatok-kyslika-sposobuje-trvale-poskodenia-mozgu-hlavne-u-deti/?fbclid=IwAR3FZCk_YrbgwqNGFNBAphS7zDKpvgs3T_jiv7xSJ4hqb8CfMk9Jm2dgxx4