Watch: US couple welcomes 'one-in-a-million' identical triplets

A suburban Detroit couple from US, who have two older children, are adjusting to life after becoming parents to identical triplets - a multiple birth a doctor calls rare. The Whiteley family celebrated the one-month birthdays of Alexander, Nicholas and Timothy. Lauren Whiteley, who wasn't taking fertility treatments, says it "was the shock of a lifetime" when an ultrasound revealed three fetuses. She and her husband, Michael, say triplets don't run in their families. Their older sons are 3 and 2. Neonatologist Dr. Savitri Kumar at Henry Ford Hospital in Detroit, where the triplets were born January 25, says data on triplet births by natural conception is variable from one in 60,000 to one in 2 million. Kumar says one-in-a-million is the most commonly quoted.