Introduction
Cows’ milk and derived dairy products have important nutri- tional and functional properties in the human diet. However, cows’ milk protein allergy (CMPA) is one of the most common food al- lergies in childhood and can cause serious health problems (Kleber, Weyrich, & Hinrichs, 2006). The incidence of CMPA ranges from 0.3 to 7.5%, according to population-based studies in different coun- tries (El-Agamy, 2007; Motrich et al., 2003).