Assessing the fidelity of a behavioural intervention involving academic detailing in general practice: a sub-study of the ‘Implementing work-related Mental health guidelines in gen... oleh Vera Camões-Costa, Samantha Chakraborty, Fatima Mozaffari, Alexander Collie, Justin Kenardy, Bianca Brijnath, Duncan Mortimer, Joanne Enticott, Michael Kidd, Lyndal Trevena, Sharon Reid, Danielle Mazza