Errors made by doctors, nurses, and other medical caregivers cause 44,000 to 98,000 deaths a year. Hospital infections take another 100,000 lives. Now hospitals are taking what might seem like a surprising approach to confronting the problem: Not only are they trying to improve safety and reduce malpractice claims, they're also coming up with procedures for handling—and even consoling—staffers who make inadvertent mistakes, the Wall Street Journal reports.