TASK DEFINITION: In medical studies, treatments are tested within a group of study participants. You will be given a sentence of a study report in which your task is to list the phrases that give information about the participants of the study. You should list the phrases in the same order that they appear in the text, separated by commas. If no information about the participants is mentioned, just output "not found". Relevant information about participants include: gender, medical conditions, location, number of people participating. Do not contain participant mentions without relevant information.
PROBLEM: Using epigastric impedance we found that infants with partial or total intestinal obstruction had gastric phasic activity , which was not found in the control infants .

SOLUTION: infants with partial or total intestinal obstruction

PROBLEM: Outcome measures will be assessed before and after the 6 month intervention period .

SOLUTION: not found

PROBLEM: Its toxicity has previously been correlated to the formation of an active metabolite , N-acetyl-amonafide .

SOLUTION:
not found