Q: 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.
In assessing the acute functional effect of bronchodilators , ΔsRAW-based criterion is preferable to FEV1-FVC-based criteria , being more closely related to bronchodilator-induced improvements of lung mechanics and dyspnea at rest .
A:
not found