Alexandra Munoz, 5, who lost her hair due to chemotherapy to treat a malignant brain tumor, undergoes...
Oncologist Katherine Kopp (C) speaks with her patients Alexandra Munoz (L), 5, and Isidora Serrano, 14, who lost their hair due to chemotherapy to treat their cancers, in the cancer ward of the Luis Calvo Mackenna Hospital in Santiago, October 20, 2014. REUTERS/Rodrigo Garrido