Each participant was informed about the purpose of the study both verbally and in writing, and we guaranteed that their information would be treated confidentially.
Those study participants who were tested positive for HIV or any susceptible symptoms for STDs were informed by study personnel confidentially and referred to treatment at the Institute of STD/AIDS Prevention and Treatment, Xicheng District Center for Disease Prevention and Control, Beijing and the STD/AIDS clinic at affiliated hospital of Tianjin Medical University.
Participants were informed that data would be handled confidentially.
All participants gave their informed consent and were informed that participation was voluntary and that they could withdraw at any time, that all data was handled confidentially and that the results would be presented in a non-identifiable way.
Participants were informed that the data would be treated confidentially.
Participants were informed that data would be anonymised, treated confidentially and that they were free to withdraw at any point during the interview, if they so wished.
They were informed that the interviews would be handled confidentially, that citations would be anonymous, and that they could ask for statements to be deleted.
The respondents were informed that all data collected would be treated confidentially, and the results presented so that no individuals could be identified.
Respondents were informed that all data collected would be treated confidentially, and the results presented so that no individuals can be identified.
During the conduction of the study, participants were informed that all the gathered data would be reserved confidentially; contribution was totally voluntary, and they had the right to leave the research at any occasion.
They were informed about the aim of the study, that data were confidentially handled and stored, that they could quit the trial at any point in time without having to explain why and that the data were only going to be used for the present study.
