Description: A father's concern for his son led to research that now sheds new light on a disease that has long been shrouded in mystery. Andrew Chia, now 24, was diagnosed with debilitating chronic fatigue syndrome in 1997. This week he is co-author with his father, Dr. John Chia, of a study which links chronic fatigue syndrome (CFS) with enteroviruses, which cause acute respiratory and gastrointestinal infections.