3Sabharwal T,Cowling M,Dussek J,et al. Balloon dilation for achalasia of the cardia; experience in 76 patients. Radiology, 2002 ;224(3) :719-724.
4Ikaheimo M. Stenotic heart valves can be reopened with balloon dilatation. Duodecim, 2001 ;117(7):713-719.
5Helmer C, Duclos-Vallee JC,Prat F,et al.Radiation-induced stricture of the papilla and the common bile duct: successful treatment with balloon dilation Radiation- induced stricture of the papilla and the commion bile duct: successful treatment with balloon dilation Gastroenterol Clin Biol ,2001 ;25(10) :905-907.