The Addis Ababa Fistula Hospital provides specialised surgery offering a cure to Ethiopian women affected by fistula which can leave a woman permanently incontinent. The Fistula Hospital - one of only three of its kind in the world - was founded in 1975 by Australian-born doctor Catherine Hamlin and her husband Sir Reg Hamlin. Obstructed labour affects five per cent of all women in the world but in most cases the problem can be treated immediately by Caesarean section. In Ethiopia, and other places in sub-Saharan Africa, it's a different story.