Venekamp Roderick P, Prasad Vibhore, Hay Alastair D
Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, 3508 GA Utrecht, Netherlands Department of Otorhinolaryngology, University Medical Centre Utrecht, Utrecht, Netherlands
School of Medicine, University of Nottingham, Nottingham, UK.
BMJ. 2016 Feb 4;352:i308. doi: 10.1136/bmj.i308.