Calls for mandatory screening after fourth boy dies
The latest victim, 13-year-old Patrick Devlin, collapsed during a GAA training session in Ardboe in Co Tyrone on Saturday morning.
Efforts to revive him were made with a defibrillator that was donated to the club by the family of Cormac McAnallen, Tyrone senior football captain, who died of a mystery coronary condition three years ago.