A diagnostic conundrum. Issue 2 (23rd January 2018) - Keddie, Stephen; Jaunmuktane, Zane; Brandner, Sebastian; Shah, Sachit; Maddison, Paul; Rees, Jeremy H; Hanna, Michael G; Lunn, Michael P T; Reilly, Mary M; Rossor, Alexander M; Carr, Aisling S