1. Department of Dermatology; Counties Manukau District Health Board; Private Bag 93311 Auckland New Zealand
2. Auckland University of Technology and Senior Biostatistician Ko Awatea; Private Bag 92006 Auckland 1142 New Zealand
3. Department of Dermatology; Waikato District Health Board; Private Bag 3200 Hamilton New Zealand
4. Department of Medicine; The University of Auckland; Auckland New Zealand