A medical staff (unseen) shows how to use a condom after a vasectomy operation on a Balinese man in Gianyar on Bali island on November 13, 2015. Thousands of men around the world are to be sterilised Friday in what organisers have dubbed a global "vasectomy-athon", to encourage men to take a bigger role in family planning. AFP PHOTO / SONNY TUMBELAKA (Photo credit should read SONNY TUMBELAKA/AFP/Getty Images)
