Correction: Postmastectomy Radiotherapy Improves Disease-Free Survival of High Risk of Locoregional Recurrence Breast Cancer Patients with T1-2 and 1 to 3 Positive Nodes
PLoS One. 2015 Dec 23;10(12):e0145972.
doi: 10.1371/journal.pone.0145972.
eCollection 2015.