His bundle capture proximal to the site of bundle branch block : a novel pitfall of the para-Hisian pacing maneuver / Jastrzębski Marek , Kukla Piotr, Czarnecka Danuta // HeartRhythm Case Reports. - 2018 vol. 4 no. 1, p. 22-25. - eISSN 2214-0271