Knight, Marian, Chiocchia, Virginia, Partlett, Christopher, Rivero-Arias, Oliver, Hua, Xinyang, Hinshaw, Kim, Tuffnell, Derek, Linsell, Louise, Juszczak, Edmund, "Prophylactic antibiotics in the prevention of infection after operative vaginal delivery (ANODE): a multicentre randomised controlled trial", , 2019