
Alex Yiu was born a seemingly healthy baby. But by age 2, his muscle control and speech were deteriorating. His baffling condition took a decade to diagnose. The reanalysis of a DNA test was the key.
(Image credit: Caroline Cheung-Yiu)

Alex Yiu was born a seemingly healthy baby. But by age 2, his muscle control and speech were deteriorating. His baffling condition took a decade to diagnose. The reanalysis of a DNA test was the key.
(Image credit: Caroline Cheung-Yiu)