Dr. H-L Tan is a consultant in Paediatric Respiratory and Sleep Medicine at the Royal Brompton Hospital and Honorary Senior Lecturer, Imperial College, London. Her areas of interest include sleep disordered breathing in children and home mechanical ventilation. She graduated from the University of Cambridge, did her paediatric respiratory training at the Royal Brompton Hospital and Great Ormond Street Hospital for Children and paediatric sleep training at the University of Chicago.