Dalvi, B VThawani, A JIyer, S S1987-02-012009-05-301987-02-012009-05-301987-02-01Dalvi BV, Thawani AJ, Iyer SS. QRS normalisation on exercise in pre-excitation syndrome. Journal of the Association of Physicians of India. 1987 Feb; 35(2): 172-3http://imsear.searo.who.int/handle/123456789/87968engElectrocardiographyHumansPhysical ExertionWolff-Parkinson-White Syndrome --physiopathologyQRS normalisation on exercise in pre-excitation syndrome.Letter