Prabhat Jha, Rajesh Kumar, Ajay Khera, Madhulekha Bhattacharya, Paul Arora, Vendhan Gajalakshmi, Prakash Bhatia, Derek Kam, Diego G Bassani, Ashleigh Sullivan, Wilson Suraweera, Catherine McLaughlin, Neeraj Dhingra, Nico Nagelkerke
BMJ. 2010; 340: c621. Published online 2010 February 23. doi: 10.1136/bmj.c621