For example, why do pro-life people say selection bias is responsible in regards to studies showing there is no abortion and breast cancer connection? I realize that Wikipedia gave this reference in regards to the selection bias possibility: http://bcpinstitute.org/printabc_html.htm '''However, are there more sources? ''' | For example, why do pro-life people say selection bias is responsible in regards to studies showing there is no abortion and breast cancer connection? I realize that Wikipedia gave this reference in regards to the selection bias possibility: http://bcpinstitute.org/printabc_html.htm '''However, are there more sources? ''' |