The NZMJ paper continues to generate requests for an independent, evidence based review:

Some things are never quite as simple as people would like us to believe....

'Helmet Lady' Rebecca Oaten, who campaigned for the new law after her son was
paralysed in a cycling accident in 1986, has responded by saying if some folk
still didn't want to be forced to wear helmets, then "too bad". ..

.. this independent group of public health and transport practitioners and
researchers went a bit further than that, even including a wee scolding in their
April, 2011 report: "The failure of mass helmet use to affect serious head
injuries, be it in falls or collisions, has been ignored by the medical world,
by civil servants, by the media, and by cyclists themselves," it noted. "A
collective willingness to believe" (in helmets) had been partly to blame.

In other words, we may have been deluding ourselves. And while we've been at it,
helping discourage cycling popularity and usage. In our rush to reduce the risk
in our world we've probably been shooting ourselves in the pedal.

it's time for an independent review. And if Ms Oaten can't relate to that, "too
bad"