School bans balls from playground to protect children from harm? and..Hep C: post hoc ergo propter hoc comes to the fore again November 17, 2011Dr. Barry Dworkin Madely Health Headlines Commentary for November 17, 2011 School bans balls from playground to protect children from harm? and..Hep C: post hoc ergo propter hoc comes to the fore again Play Now | Play in Popup | Download Source: Ottawa clinic at centre of a hepatitis C scare Parents cry foul after elementary school bans balls Reference: City of Ottawa Public Health Important Notice – Infection Prevention Lapse Related posts: Why locking school doors and installing cameras is not an unexpected idea but will not appreciably reduce risk of harm to school children Alberta bans bodychecking for peewees Health care ideology inflicting harm upon our children Post Superbowl stress may increase in heart attacks or how to completely misrepresent causality childhood injuriesHep Clogical fallacyrisk