DENNIS and KIMBERLY QUAID almost lost their infant twins after a Los Angeles hospital mistakenly gave them an overdose, and now they're speaking out to "60 Minutes."

In the interview, which is set to air at on Sunday night 7 p.m. on CBS, Quaid asserts that medical mistakes are more common than people think: "They happen in every hospital in every state in this country and ... I've come to find out, there's 100,000 people a year killed ... in hospitals by a medical mistakes. Its bigger than AIDS. Its bigger than breast cancer. Its bigger than automobile accidents and yet, no one seems to be really aware of the problem."

Dennis and Kimberly, who welcomed babies BOONE and ZOE on November 8, 2007, brought their children to Cedars-Sinai Medical Center later that month because they were suffering from staph infections. While hospitalized, the babies were accidentally administered 1,000 times the necessary dose of a blood thinning medication used to flush out IV lines.