An additional half million young people will need to be treated regularly for years, he said.
If treated early and regularly, pieces can be preserved indefinitely.
Yet in painting, colour is regularly treated as some kind of mystery, beyond out understanding.
Until Viagra came along, about two million men a year were being regularly treated for impotence.
If the police were to treat carnival-goers the way football fans are regularly treated we would never hear the end of it.
Michelangelo is regularly treated as the youngest brother and little is expected of him.
It is outrageous that decent, law-abiding people are regularly treated as if they have something to hide.
In Huambo, the city about 40 miles to the north, the hospital regularly treats patients who have been ambushed on the roads.
All horses are likely to suffer from internal parasites or 'worms' and should be regularly treated for them.
Woven panels become brittle if not regularly treated with preservative.