'I begged them not to take my arm away': Albino woman reveals the horrific moment gang hacked off her limb with a machete to sell to Tanzanian black magic witchdoctor

Kulwa Lusana was 15 when she was attacked by five men in Tanzania

They hacked off her right arm with a machete and left her for dead

She is one of hundreds of victims of a trade in albino body parts sold for thousands to fuel a trade in black magic potions brewed for 'luck'

Kulwa has now learnt to knit one-handed and hopes to start a business