To evaluate the influence that some variables have on the onset of common gastrointestinal symptoms in infants during the first 6 months after birth
To clarify the causes for hospitalization due to gastrointestinal disturbances
To determine if vomiting is a more detrimental gastrointestinal event to the health of infants during the first 6 months after birth than regurgitation
To ascertain the frequency of the most common gastrointestinal symptoms in infants during the first 6 months after birth