Zwijsen, R.M.L.

oc use study agreement prescriber women control cancer duration breast brand information case-control brand names month case-control study period history preparation breast cancer record misclassification brand name difference woman interview study population oc histories patient status breast cancer patients prescriber records breast cancer risk effect contraception exposure population netherland oc users table oc information result analysis coulter 100.0 oc preparations case-control status physician usage risk estimates number second-latest oc duration-response relationship source validity comparison group disease netherlands cancer institute prescriber information regression analysis oc exposure characteristic breast cancer cases stopplng dates pill use estimate approach duration-response hospital controls 218 women rosenberg stolley accuracy second-latest regression value memory hospital degree calendar