“…Of the 17 articles, six studies were conducted in India [ 4 , 10 , 33 , 34 , 35 , 36 ], three in Indonesia [ 12 , 37 , 38 ], two in Vietnam [ 39 , 40 ], two in Thailand [ 41 , 42 ], two in China [ 8 , 43 ], one in Cambodia [ 18 ] and one in Indonesia, India, Thailand and the Philippines [ 44 ]. Of the 17 articles, 13 were qualitative studies collecting data through one-on-one and semi-structured or unstructured interviews and focus group discussions [ 10 , 12 , 18 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. Three articles used quantitative methods (cross-sectional design) [ 4 , 8 , 44 ] and one was a mixed-method study using a cross-sectional and in-depth interview [ 43 ].…”