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

midah maluleka yo e leng ngaka kwa porofenseng ya mpumalanga a re, "go na le sele nngwe ya bo 21 (e e bidi wang trisomy 21) e e diegisang mmele le tlhaloganyo go gola.
