Simon BowdenRalph Adair Peebles BrownClive Russell CartwrightJohn Zelman GarsonKenneth Lawrence Granville-GrossmanMathias Thomas Islwyn JonesTimothy MurphyFrancis O'DalyPeter Edward SylvesterJohn Kenneth Booth WaddingtonJames Roslyn Watson
BMJ 2000; 320 :1409
doi:10.1136/bmj.320.7246.1409