When I brought Leah to Cedars-Sinai hospital in Los Angeles that Friday morning, she was a healthy 11-year-old girl. She was scheduled to have elective surgery to repair a condition called pectus carinatum, which required the opening of her chest.

Because the hospital was very busy that morning, the operation was repeatedly postponed, being moved from its original early morning time to late afternoon, when it was finally performed.

Little did I know that by the following evening my daughter would die due to medical errors.