Statement: the primary trial utilizes a single drug taken via iv and the intervention for the secondary trial entails administration of two oral drugs.
Primary_evidence: INTERVENTION 1:    Letrozole   Participants received 2.5 milligram (mg) of Letrozole tablets orally once daily (QD) for a period of 24 weeks.
Secondary_evidence: INTERVENTION 1:    Sentinel Lymph Node Biopsy [Not Specified]