title: Simultaneous wide and narrow QRS complex tachycardias in a child: what is the mechanism?
authors: Pediatric Cardiology, University of Bologna, Bologna, Italy. gabronz@hotmail.com
authors: Gabriele
authors: G
authors: Bronzetti
authors: Christine
authors: C
authors: Chiu
authors: Elizabeth A
authors: EA
authors: Stephenson
authors: Gil J
authors: GJ
authors: Gross
authors: Robert M
authors: RM
authors: Hamilton
authors: Gao
authors: G
authors: Dongsheng
authors: Andrea L
authors: AL
authors: Neilson
authors: Joel A
authors: JA
authors: Kirsh