<qa>  What is not allowed for non-protocol concurrent hormonal therapy?- Patients must not have prior hormonal therapy for metastatic disease; no prior therapy in the adjuvant setting with an estrogen receptor down-regulator e.g. fulvestrant or an aromatase inhibitor e.g. anastrozole, letrozole, exemestane, aminoglutethamide; non-protocol concurrent hormonal therapy is not allowed 