Practice-Changing Use of the 21-Gene Test for the Management of Patients With Early-Stage Breast Cancer in Latin America. - Gomez HL; Bargallo-Rocha JE; Billinghurst RJ; Núñez De Pierro AR; Coló FA; Gil LLB; Allemand C; McLean IL; Lema-Medina M; Herazo-Maya F; Terrier FJ; Cwilich RG; et al. (JCO global oncology, 2021)