The development of a novel sexual health promotion intervention for young people with mental ill-health: the PROSPEct project.

"Declarations Ethics approval and consent to participateEthical approval for developing the intervention using co-design processes and stakeholder input was obtained from the Royal Melbourne Health ethics committee/Institutional review board (ref: 2020.093). Informed consent was obtained from all participants and/or their legal guardian(s). All research was performed in accordance with relevant guidelines and regulations (such as the Declaration of Helsinki. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This project was supported by funding from the Australian Department of Health. AM’s involvement in the preparation of this manuscript was supported partially by the Australian Government through the Australian Research Council’s Centre of Excellence for Children and Families Over the Life Course (project ID CE200100025)."