Number of days between two continuous exposures to be
considered in the same era.
cohortId
A cohort definition id to restrict by. If NULL, all cohorts
will be included.
nameStyle
String to create the new names of cohorts. Must contain
'{cohort_name}' if more than one cohort is present and '{gap_era}' if more
than one gapEra is provided.
name
Name of the new cohort table, it must be a length 1 character
vector.