[1] BrainZ Instruments Ltd, Res Dept, Auckland, New Zealand
[2] Univ Michigan, Dept Paediat & Communicable Dis, Ann Arbor, MI 48109 USA
[3] Rigs Hosp, Dept Neonatol, Copenhagen, Denmark
[4] St Louis Childrens Hosp, St Louis, MO 63178 USA
[5] Wilhelmina Childrens Hosp, Dept Neonatol, Utrecht, Netherlands