00378nas a2200145   4500000000100000000000100001008004100002100001400043700001600057700001400073245009500087300001100182490000700193022003200200       2003                            d1 aH. Seaman1 aC. de Vries1 aR. Farmer00aDifferences in the use of combined oral contraceptives amongst women with and without acne  a515-210 v18  a0268-1161 (Print) 0268-1161