[1] Aalborg Univ Hosp, Clin Nursing Res Unit, Aalborg, Denmark
[2] Aalborg Univ Hosp, Clin Anesthesiol Child Dis Circulat & Women, Aalborg, Denmark
[3] Aalborg Univ Hosp, Clin Anesthesiol Child Dis Circulat & Women, Dept Pediat, Aalborg, Denmark
[4] Aalborg Univ, Danish Ctr Clin Guidelines, Dept Clin Med, Aalborg, Denmark