The short report by Tullus (see page 881) highlights safety concerns regarding the use of angiotensin II receptor blockers in preschool children.1 Tullus highlights the deaths of three preschool children out of the 183 children with hypertension who received valsartan or candesartan in two clinical trials. One needs to recognise that deaths do occur in clinical trials. A review of paediatric cl...

conduction and circus movement tachycardias in patients with Wolff-Parkinson-White syndrome. Circulation 47: 1229, 1973 31. Sellors TK, Bashore TM, Gallagher JJ: Digitalis in the preexcitation syndrome. Analysis during atrial fibrillation. Circulation 56: 260, 1977 32. De la Fuente D, Sasyniuk B, Moe GK: Conduction through a narrow isthmus in isolated canine atrial tissue. A model of the WPW sy...