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.
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Question: Three hundred forty-one Tanzanian preschool children were randomly assigned to levamisole or placebo treatment given at three-month intervals .

Answer: not found


Question: Evaluation was performed in each group at baseline and after posterior tibial nerve stimulation to compare clinical and urodynamic findings .

Answer: not found


Question: A multi-component social skills intervention for children with Asperger syndrome : the Junior Detective Training Program .

Answer:
children with Asperger syndrome