New global surgical and anaesthesia indicators in the World Development Indicators dataset. Issue 2 (24th May 2017) - Raykar, Nakul P; Ng-Kamstra, Joshua S; Bickler, Stephen; Davies, Justine; Greenberg, Sarah L M; Hagander, Lars; Johnson, Walt; Leather, Andrew J M; McQueen, K A Kelly; Mukhopadhyay, Swagoto; Suzuki, Emi; Weiser, Thomas; et al.