Setting
Lebanon is a lower-middle-income country and globally hosts the highest number of refugees per capita, with an estimated 1.5 million Syrian plus large numbers of Palestinian refugees from a national population of 5.9 million [We carried out the study in community centres in the North governorate of Lebanon, including urban areas in Tripoli and agricultural areas in Minieh-Dinnieh from September 2018 to July 2019. The trial was implemented by War Child, an international non-governmental organization that has been responding to the Syrian crisis in Lebanon since 2012. Ethical approval was obtained via the Ethical Review Committees at St Joseph’s University in Beirut (USJ-2017–24-bis), and the World Health Organization (ERC.0003000).