When Julio Harari’s son was suffering from cancer and became upset about his hair falling out after chemotherapy, the banker from Buenos Aires shaved his own head. He went to work the next day shorn of hair, to the puzzled reaction of colleagues.

Mr Harari describes his experience: “They tell you that your son is sick and you freeze. Then you get results from the next test, and you freeze again. You start thinking about what life is going to be like without your son, and you freeze. But you have to carry on, there are others in the family and other responsibilities as well.”

Although Mr Harari was traumatised by his son’s cancer, he was also able to put his feelings aside in this show of support for his son, who died in 2015 at the age of 24.