The myth of the 1-day training: the effectiveness of psychosocial support capacity-building during the Ebola outbreak in West Africa – ADDENDUM. (17th June 2019) - Horn, Rebecca; O'May, Fiona; Esliker, Rebecca; Gwaikolo, Wilfred; Woensdregt, Lise; Ruttenberg, Leontien; Ager, Alastair