Original: Leila Alice Denmark , M.D. née Daughtry ( born February 1 , 1898 ) is , at , an American pediatrician who became the oldest practicing pediatrician in the world , retiring at the age of 103 in May 2001 .
Simplified: Leila Alice Daughtry Denmark , M.D. ( born February 1 , 1898 ) is an American pediatrician who still worked until she was 103 .