CREATE TABLE table_68942 ("Year" TEXT, "Men's singles" TEXT, "Women's singles" TEXT, "Men's doubles" TEXT, "Women's doubles" TEXT, "Mixed doubles" TEXT)

who won the women's doubles at the same time the men's doubles had tijs creemers quinten van dalm?
SELECT "Women's doubles" FROM table_68942 WHERE "Men's doubles" = 'tijs creemers quinten van dalm'
SELECT "Women's doubles" FROM "table_68942" WHERE "Men's doubles" = 'tijs creemers quinten van dalm'