1 Bariatric and Metabolic Surgery Unit, Athens Medical Center, Athens, Greece.
2 Paediatric Emergency Department, Northwick Park Hospital, London North West University Healthcare NHS Trust, London, UK.
3 Bariatric and Metabolic Surgery Unit, Heartlands Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham B9 5SS, UK. Electronic address: singhal_rishi@hotmail.com.