Data extraction
Two authors (P.R.M.-F. and E.M.N.-J.) extracted the data from included
studies and crosschecked them for accuracy. Using a standardized data
extraction sheet, the following information were extracted from the
studies: registry of study protocol, demographic characteristics of
study participants, pre-existing medical conditions, treatment arms,
nitazoxanide protocol, concomitant medications, follow-up duration, and
outcome data.