1. MANILA Consulting Group, Inc.; 1420 Beverly Road Suite 220 McLean VA USA 22101
2. ECRI Institute; 5200 Butler Pike Plymouth Meeting PA USA 19462
3. Manila Consulting Group; 1420 Beverly Road Suite 220 McLean Virginia USA 22101
4. University of Oxford; Pain Research and Nuffield Department of Clinical Neurosciences (Nuffield Division of Anaesthetics); Pain Research Unit Churchill Hospital Oxford Oxfordshire UK OX3 7LE
5. Oregon Health & Science University; Department of Medical Informatics and Clinical Epidemiology; 3181 SW Sam Jackson Park Rd. Mail Code: BICC Portland Oregon USA 97239