Avrum Blummins Oestrogen Matters book, has many papers that have never seen the light of day in the same way as negatives do.
His wife & daughter have both had breast cancer & both are on HRT, he is a highly renowned breast oncologist from the US.
U.K. professor Micheal Baum also says HRT after BC is not a worry, he did 2 very good podcasts with Liz Earle about it a few weeks ago.