Families were randomized to the intervention group granted in total one hour instructions in a program of oral stimulation by one of two occupational therapists with experience in oral stimulation of preterm infants. The program is in collaboration with the project team developed and described by the Department of Physiology and Occupational therapy at Hvidovre Hospital. The first guidance for parents has duration of approximately half an hour and then follow-up once or twice, depending on the needs of the family. To maintain consistent intervention over time is the program of oral stimulation written in a script, where the family also must record the following variables: date and time of oral stimulation. In occupational therapy the guidance and in the script examines the signs that the infant exhibits when it is ready / not ready for stimulation. The family also sees a movie where these signs and the program of oral stimulation review auditory and visual. Families in the control group is not seeing the movie, do not receive the script or the supervision of occupational therapists and these infants do not get oral stimulation. Both groups receive instructions after usual practice i.e. guidance and elements that promote breastfeeding example, skin to skin contact and compression.