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APA Citation
Gibbs, J. L., Blackburn, M. E., Uzun, O., Dickinson, D. F., Parsons, J. M., & Chatrath, R. R. (1997). laser valvotomy with balloon valvoplasty for pulmonary atresia with intact ventricular septum: five years' experience.. Heart, 77(3), 225–228. http://access.bl.uk/ark:/81055/vdc_100137786922.0x00001f