I'd just like to clarify a point, and that is that, when we prescribe it to somebody now, it's either because the other anti-malarials are contraindicated or it's because they have chosen to and have taken it before without having significant symptoms. It has sort of been tested, if you will.
There is disagreement amongst experts about whether one pill can cause long-term adverse health effects. We don't say “and one pill”; we say there is a risk. What we tell patients is what's in the drug monograph.