Peter was initially trained in general pediatrics at the ErasmusMC/Sophia children’s hospital in Rotterdam, the Netherlands. After qualifying as consultant pediatrician in 2005 he went on to further specialize in Pediatric Intensive Care at the Royal Children’s Hospital in Melbourne, Australia, from 2005 to 2008 where he acquired extensive ECMO experience. After qualifying in January 2009 he became a consultant at the pediatric cardiac intensive care unit at the Leiden University Medical Center where he is the director of the ECMO program. He also worked as locum consultant at the Hospital for Sick Children (Yorkhill) in Glasgow, Scotland. He is actively involved in several ELSO conferences and has contributed to book chapters on ECLS.