Statement: The the primary trial intervention involves one drug taken orally and the secondary trial intervention is based on a medical procedure.
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]