Sanches C, Galas FR, Silva AG de M, Carmona MJC, Auler Jr. JO, Santos SRCJ. Propranolol plasma monitoring in children submitted to surgery of tetralogy of Fallot by a micromethod using high performance liquid chromatography . Clinics. 2007;62(3):215-224. doi:10.1590/S1807-59322007000300004