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lower if a key government agency kept closer watch? that is a question jim axelrod will be examining in our sunday morning cover story. >> reporter: seven years ago cardiologist robert houser lost a patient, joshua, because joshua's implanted heart device was defective. that led dr. houser to the f.d.a. where he uncovered problems. he's been battling to fix them ever since. did you think you'd still be talking about this in 2012? >> no, it's so obvious. >> reporter: the troubling record of the f.d.a.'s oversight of medical devices. later on sunday morning. >> reporter: patti smith fi...

lower if a key government agency kept closer watch? that is a question jim axelrod will be examining in our sunday morning cover story. >> reporter: seven years ago cardiologist robert houser lost a patient, joshua, because joshua's implanted heart device was defective. that led dr. houser to the f.d.a. where he uncovered problems. he's been battling to fix them ever since. did you think you'd still be talking about this in 2012? >> no, it's so obvious. >> reporter: the troubling record of the f.d.a.'s oversight of medical devices. later on sunday morning. >> reporter: patti smith fi...

will be examining in our sunday morning cover story. >> reporter: seven years ago cardiologist robert houser lost a patient, joshua, because joshua's implanted heart device was defective. that led dr. houser to the f.d.a. where he uncovered problems. he's been battling to fix them ever since. did you think you'd still be talking about this in 2012? >> no, it's so obvious. >> reporter: the troubling record of the f.d.a.'s oversight of medical devices. later on sunday morning. >> reporter: patti smith first made her name in the rock music world four decades ago. in the years since she'...