COVID-19(13) pandemic(8) COVID-19 pandemic(8) parents(7) Anxiety(6) children(5) adolescents(5) mental health(5) Result(5) School-age children(5) Psychological(4) pediatric(4) Depression(4) Effect(4) Parenting(4) stress.(4) Qualitative methods(3) Nordic countries(3) Families(3) affecting(3) Intervention(3) age(3) reliability(3) Contagion(3) objective(3) expressed(3) Universal(3) death(3) Worry(3) responses(3)