CREATE TABLE table_445 ("Year" FLOAT, "Mens singles" TEXT, "Womens singles" TEXT, "Mens doubles" TEXT, "Womens doubles" TEXT, "Mixed doubles" TEXT)

What are the mixed doubles where the mens singles is kim brodersen?
SELECT "Mixed doubles" FROM table_445 WHERE "Mens singles" = 'Kim Brodersen'
SELECT "Mixed doubles" FROM "table_445" WHERE "Mens singles" = 'Kim Brodersen'