PHOTO: Two sets of identical twins

A combination photo show shows two sets of identical twins, top row; Ace and Blaine (R), bottom row; Cash and Dylan (R) at the Woman's Hospital of Texas in these Feb.18, handout photographs. The brothers were born to Tressa Montalvo on Valentine's Day. The odds of delivering two sets of naturally occurring identical twins is somewhere in the range of 1 in 70 million, according to the hospital. (Reuters/The Woman's Hospital of Texas/Handout)