2 St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, UK 3 Department of Dermatology, Great Ormond Street Hospital NHS Trust, London, UK 4 The Robin Eady National ...
Department of Epidemiology and Biostatistics, Erasmus Medical Center, Rotterdam, The Netherlands Correspondence to: F A Sayed-Tabatabaei Department of Epidemiology and Biostatistics, Erasmus Medical ...