We look, as I've mentioned, in terms of evidence-based medicine—evidence-based, that the Chief Science Advisor has given her updates on more recently, just in the last week. Fluoride, which naturally occurs in water, can help strengthen teeth and prevent dental caries, or dental cavities. In Aotearoa, we know that we only have a low number of fluoride, hence why we have to supplement that. This is welcomed by many health professionals, as we know. We've heard from the different public health organisations, the dental organisations that support this, WHO as well—World Health Organization—the Centers for Disease Control and Prevention across the ocean as well that support this measure.