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.

Ascaris and growth rates : a randomized trial of treatment .
not found

These data show that acute nicotine administration , in the form of nicotine gum , has no effect on cardiovascular or lipid stress reactivity in women .
women

Although collaborative care is effective for treating depression and other mental disorders in primary care , there have been no randomized trials of collaborative care specifically for patients with Posttraumatic stress disorder ( PTSD ) .

patients with Posttraumatic stress disorder, PTSD