Besides his wife , his survivors include three sons , Thomas Woo of Santa Monica , Calif. ; and Bennett Woo and Peter Woo , both of Palo Alto ; two half brothers , Robert C. Woo of St. Louis and John Woo of New York ; a stepbrother , Willie Woo of New York ; a half sister , Wendy Woo of San Mateo , Calif. ; and a stepsister , Elizabeth Li of Hong Kong .