“…Additional reasons for participation mentioned were: ability to withdraw [91], advice from physician [20,27,77,85], community involvement [34,[61][62][63]66], cultural acceptability [63,91], creating a feeling of community [44], low pressure decision [75], need for treatment [77], research involving a non-invasive procedure [46,81], peer enrolment [33,44,84], low perception of risk [54,70], result availability [20], guarantee of confidentiality [23,33,34,62], being unaware of voluntariness of participation [46], research outcome, [60,62,66,84] and finally seeing research participation as motivation to avoid risky behaviour [59]. The most important reasons for non-participation were safety concerns, inconvenience, stigmatisation, lack of social support, confidentiality concerns, physical pain, efficacy concerns and distrust.…”