More women with early breast cancer can avoid chemo, study finds
Results of a study on breast cancer are expected to change treatment for thousands of women in the early stages of the disease. The study of more than 10,000 women found that many of them did not need chemotherapy to prevent the cancer from returning. Dr. David Agus, who leads the USC Norris Westside Cancer Center, joins "CBS This Morning" from Los Angeles to discuss the findings.