“…If the informed consent process for research requires involvement of both parents and teenagers, it will need to be discussed with both parties what type of information might be shared with parents or guardians and what will remain strictly confidential. There is evidence that in research concerning sensitive areas, expectations about disclosure from both parties might differ significantly from existing policies and the researcher needs to clarify these in advance (Lyren et al, 2004 andPasternak et al, 2005). In research on services, possible limitations of confidentiality need to be considered carefully, including the issue of the danger of discouraging teenagers from accessing important health services (Jackson and hafemeister, 2001) and the question of how to deal with the fact that research may accidentally uncover, or even directly address, teenagers' behaviour that is illegal (Moolchan and Mermelstein, 2002).…”