Shabbir, Muhammad, et al. “RADIOFREQUENCY CATHETER ABLATION FOR THE MANAGEMENT OF PAROXYSMAL SUPRAVENTRICULAR TACHYCARDIAS: EXPERIENCE AT AFIC & NIHD”. Pakistan Armed Forces Medical Journal, vol. 66, no. SUPPL-1, Mar. 2022, pp. S57-62, https://pafmj.org/PAFMJ/article/view/8329.