Table: nordic_badminton_champs
Columns: year
men_s_singles
women_s_singles
men_s_doubles
women_s_doubles
mixed_doubles

Question: Who won the men's doubles the year Pernille Nedergaard won the women's singles?
SQL: SELECT "men_s_doubles" FROM nordic_badminton_champs WHERE "women_s_singles" = 'pernille nedergaard'