Author S. Markar C. Arhi T. Wiggins A. Vidal-Diez A. Karthikesalingam A. Darzi J. Lagergren G. Hanna Year of Publication 2018 DOI 10.1097/sla.0000000000003131 DOIGoogle ScholarBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS