title: Authors' reply to Harris and colleagues.
authors: Royal Free Campus, University College London, Royal Free Hospital, London NW3 2PF, UK k.gurusamy@ucl.ac.uk.
authors: Kurinchi S
authors: KS
authors: Gurusamy
authors: Royal Free Campus, University College London, Royal Free Hospital, London NW3 2PF, UK.
authors: Brian R
authors: BR
authors: Davidson
mesh_terms: D042882:Gallstones / Q000601:surgery*; D006801:Humans