ATR International Patron, Her Royal Highness Crown Princess Mary of Denmark, and His Royal Highness Crown Prince Frederik, visited twin research studies in Sydney during their recent Australian tour. See photos and video from this historic day.

Are you interested in being involved in a study? We are recruiting for a number of different projects in need of twins and multiples. Most studies simply require you to complete a questionnaire, while others might involve a free test such as a bone density scan or MRI.