For over four decades, David and Leon had been raised by each other’s biological parents. DNA testing confirmed the mix up, in a hospital in the Canadian province of Manitoba after they were born in 1975. Valentina Suman and Tatyana Muradyan were born at the same hospital in Moldova, in March of 1978. But after bath time, the nurses returned the babies to the wrong families— who took them home. The families say they didn’t learn the truth until a 2017 DNA test.