1. University of Birmingham; Public Health and Epidemiology U; Public Health Building Edgbaston Birmingham UK B15 2TT
2. Institute of Child Health; University of Birmingham; Whittall Street Birmingham UK B4 6NH
3. City University London; School of Health Sciences; Myddleton Street London UK EC1V 0HB
4. South Cleveland Hospital; Dermatology; Marton Road Middlesborough UK