Correction: 18 F-fluoroestradiol PET/CT measurement of estrogen receptor suppression during a phase I trial of the novel estrogen receptor-targeted therapeutic GDC-0810: Using an imaging biomarker to guide drug dosage in subsequent trials(Clin Cancer Res. (2017) 3:12 (3053-3060) DOI: 10.1158/1078-0432.CCR-16-219)