Luis Vargas2026-03-222026-03-22196310.1016/s0140-6736(63)90435-5https://doi.org/10.1016/s0140-6736(63)90435-5https://andeanlibrary.org/handle/123456789/62699enBreast cancerMedicineOncologyCancerInternal medicineTREATMENT OF EARLY BREAST CANCERarticle