Early Discontinuation and Nonadherence to Adjuvant Hormonal Therapy in a Cohort of 8,769 Early-Stage Breast Cancer Patients -- Hershman et al., 10.1200/JCO.2009.25.9655 -- Journal of Clinical Oncology

blog Note: at the time of this post, full free access to the paper was available; a search of the paper for the term 'side effects' = O with the exception of references 

study: "There are several limitations to our study. First,we were unable to determine the reasons for nonadherence and discontinuation."