Russell, W Ritchie, J G Clark, R W D Turner, David Doyle, M F A Woodruff, R F Rintoul, and E A W Slater. 2013. “Res Medica, Summer 1960, Volume II, Number 2”. Res Medica 2 (2). https://doi.org/10.2218/resmedica.v2i2.335.