@misc{10156, author = {H. Seaman and C. de Vries and R. Farmer}, title = {Differences in the use of combined oral contraceptives amongst women with and without acne}, year = {2003}, journal = {Hum Reprod}, volume = {18}, number = {3}, pages = {515-21}, issn = {0268-1161 (Print) 0268-1161}, }