CREATE TABLE table_15001681_1 (mixed_doubles VARCHAR(255), womens_singles VARCHAR(255), mens_singles VARCHAR(255))
In 2001, where the mens singles is armand jehle and the womens singles is michaela ritter, who are the mixed doubles
    
SQL: SELECT mixed_doubles FROM table_15001681_1 WHERE womens_singles = "Michaela Ritter" AND mens_singles = "Armand Jehle"