TY - JOUR T1 - Rebuttal: Do β-blockers have a role in treating hypertension? JF - Canadian Family Physician JO - Can Fam Physician SP - 800 LP - 801 VL - 53 IS - 5 AU - James P. McCormack Y1 - 2007/05/01 UR - http://www.cfp.ca/content/53/5/800.2.abstract N2 - ER -