[1] Lund Univ, Dept Hlth Sci, Fac Med, S-22100 Lund, Sweden
[2] Med Univ Graz, Div Neonatol, Dept Paediat, Graz, Austria
[3] Med Univ Graz, Res Grp Paediat Tradit Chinese Med, TCM Res Ctr Graz, Graz, Austria
[4] Univ Alberta, Dept Paediat, Edmonton, AB, Canada
[5] Royal Alexandra Hosp, Neonatal Res Unit, Alberta Hlth Serv, Edmonton, AB, Canada
[6] Univ Oslo, Inst Hlth & Soc, Dept Gen Practice, Oslo, Norway