Study limitation
Despite the collection of AEs during patients’ follow-up at the
hospital, as well as through parent’s call to the 24-hour hotline, the
existence of missing data may be inherent to the retrospective design of
the study. Moreover, 54 children with IH and treated with other forms of
betablockers (acebutolol, propranolol) during the study period were not
included in the analysis.