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:
Effect of antipyretic drugs in children with malaria .
answer:
children with malaria


question:
However , there was no difference in the improvements made by children in the intervention and control conditions on facial expression and body-posture recognition measures .
answer:
children


question:
The relation was equally strong in patients with severe pulmonary disease ; for patients with FEV1 < 1.51 the mean difference was 0.21 ( 0.80 ) mmol/min/kPa .
answer:

patients with severe pulmonary disease