Randomized trial of vitamin D3 to prevent worsening of musculoskeletal symptoms in women with breast cancer receiving adjuvant letrozole. The VITAL trial.
Khan QJ, Kimler BF, Reddy PS, Sharma P, Klemp JR, Nydegger JL, Yeh HW, Fabian CJ. Randomized trial of vitamin D3 to prevent worsening of musculoskeletal symptoms in women with breast cancer receiving adjuvant letrozole. The VITAL trial. Breast Cancer Res Treat. 2017 Nov; 166(2):491-500.