http://www.medicinenet.com/rickets/article.htm except possibly in under developed countries. I recall as a kid at school, we were supplied, free of charge with various items, some I liked some I didn't.....the orange juice was excellent, the cod liver oil frankly quite disgusting,looked like frogspawn, but was supposed to be good for us......
and the milk in small bottles (if we ever got it, because parents and adults needed it for their tea) Of course, in Scotland, the cream lifted the foil up off the milk and froze everything in Winter, and at other times of the year, the birds came and picked at the capsules to drink the cream .....amusing to see!
The point I'm trying to make is that few of us caught or developed rickets, and so.....to save money, they (the Government) stopped these things, many years ago, and now - well, now - they'll be forced to offer them again...at quite a high price to taxpayers!
Of course, it should help to reduce the 'milk lakes' of Europe, or the abused orange production in Europe as well............., or even the 'butter mountains in Europe - butter also has Vitamin D - but cod liver oil....Well - the fish 'Cod' is now a highly protected species with fishing limitations! Recovering rapidly, but still protected!