sentences:  The research he carried out under Rooth's mentorship laid the foundation for his doctoral dissertation in 1977, "Hypoxanthine as an Indicator of Hypoxia", and for what would become his major research interest.From 1980 to 1981 he was a Fogarty International Fellow at the Department of Neonatology of the University of California, San Diego, in the unit of the legendary professor Louis Gluck, known as the father of neonatology.Saugstad was appointed senior consultant in newborn medicine at Rikshospitalet in 1986.