De Groef A, Demeyer H, de Kinkelder C, Dukers-van Althuis S, et al. Physical Activity Levels of Breast Cancer Patients Before Diagnosis Compared to a
Reference Population: A Cross-Sectional Comparative Study. Clin Breast Cancer 2021 Dec 16. pii: S1526-8209(21)00357.
PMID: 35012888