CHANG, Hsia Fei (Wang) Of Waltham, January 12, 2013. Wife of the late Shi Tsun Chang. Mother of William Tien-Hung Chang, Samuel Tien-Shang Chang, Howard Tien-Haw Chang, and Larry Tien-Lan Chang. Lorna is also survived by 11 grandchildren and 1 great grandchild. Biochemist, worked at Mass. General Hospital Enzyme Research Laboratory under Dr. Carl F. Cori, Nobel Prize laureate, from 1967 to 1980. Her interests included Traditional Chinese Water Color Painting, Gardening, and Swimming (winner of 9 gold medals and 1 silver medal at the Boston City Senior Olympics). A funeral service will be held Thursday, January 17 at the Douglass Funeral Home, 51 Worthen Rd., LEXINGTON at 10am. Relatives and friends are kindly invited to attend. Visitation Thursday prior to service from 9am to 10am. Interment private.