Authors: Michaela A Riddell; Rohina Joshi; Brian Oldenburg; Clara Chow; K R Thankappan; Ajay Mahal; Nihal Thomas; Velandai K Srikanth; Roger G Evans; Kartik Kalyanram; Kamakshi Kartik; Pallab K Maulik; Simin Arabshahi; R P Varma; Rama K Guggilla; Oduru Suresh; G K Mini; Fabrizio D'Esposito; Thirunavukkarasu Sathish; Mohammed Alim; Amanda G Thrift Journal: BMJ Open Date: 2016-10-08 Impact factor: 2.692