Oral Food Challenges
OFCs were performed to assess FPIES resolution, in medical day units. Children were considered to be tolerant if no symptoms occurred within 4 hours after ingestion of the food in question, and they were able to tolerate one age-appropriate serving regularly at home. We took into account the successful reintroduction performed at home (accidental or voluntary exposure). An OFC failure was diagnosed in the case of recurrence of vomiting, even if isolated, as suggested by Leonardet al. 21