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Westra, Sjoerd W., Stijn P. G. van Vugt, Sümeyye Sezer, Reinder Evertz, Martin E. Hemels, Rypko J. Beukema, Carlo de Asmundis, Marc A. Brouwer, und Gian-Battista Chierchia. "Second-generation Cryoballoon Ablation for Recurrent Atrial Fibrillation After an Index Cryoballoon Procedure: A Staged Strategy With Variable Balloon Size." J Interv Card Electrophysiol 2018.

Westra, Sjoerd W., et al. "Second-generation Cryoballoon Ablation for Recurrent Atrial Fibrillation After an Index Cryoballoon Procedure: A Staged Strategy With Variable Balloon Size." J Interv Card Electrophysiol 2018.