[1] Rigshosp, Copenhagen Univ Hosp, Dept Pediat & Adolescent Med, Blegdamsvej 9, DK-2100 Copenhagen, Denmark
[2] Univ Copenhagen, Copenhagen, Denmark
[3] Lund Univ, Dept Hlth Sci, Lund, Sweden
[4] Jonkoping Univ, Child Res Grp, Dept Nursing Sci, Sch Hlth Sci, Jonkoping, Sweden
[5] Univ N Carolina, Sch Nursing, Chapel Hill, NC USA
[6] Univ Southern Denmark, Danish Knowledge Ctr Rehabil & Palliat Care REHPA, Odense Univ Hosp, Nyborg, Denmark