Funding
prematurity
Open access funding provided by Norwegian University of Science and Technology The study was supported by St. Olavs Hospital, Trondheim University Hospital, Norwegian University of Science and Technology, Trondheim, Norway; The Norwegian Extra Foundation for Health and Rehabilitation (grant 0223), the National parent organisation for prematurity, Norway, and The Norwegian Fund for Post-Graduate Training in Physiotherapy (1/370–00/09), Oslo, Norway.