From the social perspective, cancer incidence is a crucial indicator
of the level and quality of living standards, and cancer is one of the
most frequent causes of death in children. In highly developed
countries, cancers account for approximately 4% of death cases in
children under 5 years of age and as many as 13% in children aged 5–15
(Mosavi-Jarrah et al., 2007). In developing countries, these rates also
increase (Mosavi-Jarrah et al., 2007; Belpomme et al., 2007). Despite