In medical studies, the efficacy of medical treatments (called interventions) is evaluated 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 describe the intervention(s) of the study. You should list the phrase in the same order that they appear in the text, separated by commas. If no information about the interventions is mentioned, just answer with "not found". Interventions are: a specific drug, surgery, talking therapy, a lifestyle modification, control or placebo treatment. Do not include details, dosages, frequency and duration, intervention mentions that are not in an informative span of text.

Ex Input:
Approximately two thirds were smokers and were randomized to be tested after either a 12-hr nicotine deprivation or administration of nicotine gum .

Ex Output:
nicotine deprivation, nicotine


Ex Input:
Participating physicians were randomized to either the demonstration or the control arm , and patients were assigned to a study arm based on the randomization of their physicians .

Ex Output:
not found


Ex Input:
Amonafide was given at 300 mg/m2/day i.v . for 5 days , and repeated at 21-day intervals for a maximum of four cycles .

Ex Output:

not found