Bidirectional Ventricular Tachycardia of Unknown Etiology.Published in:Journal of the College of Physicians & Surgeons Pakistan, 2013, v. 23, n. 5, p. 347By:Ali, Mehboob;Khan, Javaid Arif;Masood, Tariq;Shamsi, Fahad;Dero, Mushtaq Hussain;Khan, SulmanPublication type:Article