Correction to Addition of radium-223 to abiraterone acetate and prednisone or prednisolone in patients with castration-resistant prostate cancer and bone metastases (ERA 223): a randomised, double-blind, placebo-controlled, phase 3 trial (The Lancet Oncology (2019) 20(3) (408–419), (S147020451830860X), (10.1016/S1470-2045(18)30860-X))