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 Q]: Constant exhalation may therefore be a useful alternative to the breath holding technique for clinical measurement of TLCO .
[EX A]: not found

[EX Q]: Eligible patients were randomly assigned at enrollment to receive three weekly doses of epoetin alfa 40,000 U subcutaneously ( SC ) , followed by either standard weekly epoetin alfa ( 40K arm ) or 120,000 U of epoetin alfa ( 120K arm ) SC every 3 weeks for 18 additional weeks .
[EX A]: epoetin alfa

[EX Q]: Treatment failures ( including relapses ) occurred at each visit in 5.8 % , 12.7 % and 10.7 % of amoxicillin recipients and 6.2 % , 11.9 % and 11.3 % of penicillin V recipients , respectively .
[EX A]:
amoxicillin, penicillin V