Effect of acute hypoxia on QTc interval in respiratory patients undergoing fitness to fly tests. Issue 8 (22nd October 2010) - Skipworth, J R A; Puthucheary, Z; Raptis, D A; Rawal, J; Shrikrishna, D; Windsor, J; Cramer, D; Polkey, M I; Montgomery, H E; Hopkinson, N S