It’s a visual that has been passed down from generation to generation, from the time you were a child to now as a parent: the classic collage hanging in the reception area of any pediatrician’s or obstetrician’s office. The framed faces of children for whom the physician has cared – oftentimes spanning the patient’s entire adolescent life – captures fragments of time, ranging from the first moment a baby enters the world to a professional shot of that same child graduating high school.