U.S. death certification data show that the number of bed-related accidental suffocations nearly quadrupled with increased bed sharing, from 6 deaths per 100,000 infants in 1999 to 23 per 100,000 in 2015, the report noted. Dr. Rachel Moon, a UVA pediatrics professor not involved in the study, told the Associated Press that the study's results are not surprising. “Every day I talk to parents who have lost babies. They thought they were doing the right thing, and it seems safe and it seems OK, until you lose a baby,” Moon said.