Different knowledge, different styles of reasoning: a challenge for guideline development. Issue 3 (3rd April 2018) - Wieringa, Sietse; Dreesens, Dunja; Forland, Frode; Hulshof, Carel; Lukersmith, Sue; Macbeth, Fergus; Shaw, Beth; van Vliet, Arlène; Zuiderent-Jerak, Teun