mpumalangabased medical practitioner dr midah maluleka says: "there is an extra number 21 chromosome (trisomy 21) which causes delays in physical and intellectual development.

muḓivhi wa zwa dzilafho wa mpumalanga vho dokotela midah maluleka vha ri, "hu na khuromozoumu ya u ḓadzisa ya vhu21 ( trisomy 21) ine ya vhanga u khakhisea kha nyaluwo ya muvhili na ṱhalukanyo.
