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:
The end point of CALGB 8642 is to assess the difference in survival , toxicity , and overall response when limited exposure to Phase II agents precedes standard chemotherapy .
answer:
not found


question:
Accordingly , the current study examined within-person covariation between time-varying abstinence and depressive symptom in a multilevel model ( MLM ) , which allowed for transitions between smoking statuses within a participant .
answer:
not found


question:
Stent related symptoms were present in a good proportion of patients in groups 1 and 2 but there was a significant difference in the incidence of urinary tract infections ( 11.5 % versus 38.1 % , p = 0.04 ) .
answer:

not found