The 20-30% referred to early stage trials. Later on, dosages were increased in stages from June to Sept.
Nobody knows the outcome of that far more interesting later stage.
I suggest you read this site starting with post 11104- Big_One=Munch and I am Halcyon (signed off with "Gerry"):
http://www.ozestock.com.au/MessageBoard.asp?Action=ListBySymbol&Symbol=NRT
This refers to the Sydney meeting coming up.
Gerry
