1 Department of Pathology and Carney Centre for Pharmacogenomics, University of Otago, Christchurch, New Zealand.
2 Uppsala Monitoring Centre, WHO Collaborating Centre for International Drug Monitoring, Uppsala, Sweden. ruth.savage@otago.ac.nz.
3 Department of General Practice, University of Otago, Christchurch, PO Box 4345, Christchurch, 8140, New Zealand. ruth.savage@otago.ac.nz.
4 New Zealand Pharmacovigilance Centre, Department of Preventive and Social Medicine, University of Otago, Dunedin, New Zealand. ruth.savage@otago.ac.nz.