- All infants born at 28 weeks gestation or who are at least 28 weeks corrected age are eligible to participate. Only those in isolettes (incubators) will be included. Once a baby has been transitioned to a bassinet or crib, the baby will be pulled from the study. In order to be included, these infants must be in stable condition (without serious active medical issues) as decided by their doctor and must be breathing without the use of a ventilator.