1,000
Participants
Start Date
January 31, 1997
Primary Completion Date
December 31, 2007
Study Completion Date
December 31, 2007
Individually and in groups
During three year in a clinical setting.
Karolinska University Hospital, Karolinska Institutet, Dept. of Clinical Science, Intervention and Technology (CLINTEC), Division of Pediatrics, Stockholm
Karolinska University Hospital
OTHER