instruction:
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.
question:
In contrast , the number of wet nights and urodynamic parameters did not change significantly in group 2 .
answer:
not found


question:
Since the results were essentially identical between the techniques , it seems that comparable pathophysiological factors affect TLCO during breath holding and constant exhalation .
answer:
not found


question:
[ The effect of ionic and nonionic x-ray contrast media on myocardial perfusion and myocardial function ] .
answer:

not found