Participants
The study was carried out in the pediatric hematology-oncology outpatient clinic at a large tertiary children's hospital.
Oncology patients or their parents (for children younger than 11 years of age) were asked during a routine visit to fill out a questionnaire regarding sun habits. All patients 2–21 years old, during active anti-cancer treatment or after, were offered participation in the study. Demographic data including age, gender, time of diagnosis, disease type, and anti-cancer treatment were obtained from the patients' charts [13].