Fig. 1

Evolution of care over time. Treatment, diagnostic tools, guidelines and experience of the staff developed over time. Cut off values for phototherapy was based on different guidelines and the type of phototherapy available changed: home built phototherapy units with fluorescent light were available initially and then manufactured bulbs (Philips TL20 W) were used until LED-lights became available. In 2013, collaboration with a tertiary hospital in Thailand was set up to refer neonates who needed exchange transfusion. The condition for referral was a bilirubin more than 550 μmol/L not responding to phototherapy