sentences:  In 1990–91, Dr. Avery became the first pediatrician to head the President of the American Pediatric Society.She has been involved in child healthcare delivery worldwide, as an active member of UNICEF.Avery went into retirement in the late 1990s and she aspired to aid “mothers of the world sharing a common cause that life will be good for their children.” Mary Ellen Avery died on December 4, 2011, at the age of 84 in Wellesley, Massachusetts.