The prognostic role of HER2 expression in ductal breast carcinoma in situ (DCIS); a population-based cohort study. - Borgquist, Signe; Zhou, Wenjing; Jirström, Karin; Amini, Rose-Marie; Sollie, Thomas; Sørlie, Therese; Blomqvist, Carl; Butt, Salma; Wärnberg, Fredrik (BMC Cancer, 2015)