Authors’ contributions
SS drafted the manuscript and developed interview guides and questionnaires, supported by UK's knowledge. KIH contributed to the formal analysis. JKN provided conceptual input. BSM critically commented on the manuscript. SS performed the qualitative and quantitative data collection and analyses, developed structural equation models and interpreted data with methodical input from ID. UK and HP revised the first version of the manuscript and contributed to the initial planning and discussion. All authors read and approved the final manuscript.