Self-reported and clinically evident gingival bleeding and impact on oral health-related quality of life in young adolescents: a comparative study.

"Conflict of interest The authors do not have any conflicts of interest regarding the conduct of the research or publication of the findings."

"This research was supported by the Consortium for Advanced Research Training in Africa (CARTA). CARTA is jointly led by the African Population and Health Research Center and the University of the Witwatersrand and funded by the Carnegie Corporation of New York (Grant number: B 8606.R02), Sida (Grant number: 54100113), the DELTAS Africa Initiative (Grant number: 107768/Z/15/Z) and Deutscher Akademischer Austauschdienst (DAAD). The DELTAS Africa Initiative is an independent funding scheme of the African Academy of Sciences (AAS)'s Alliance for Accelerating Excellence in Science in Africa (AESA) and supported by the New Partnership for Africa's Development Planning and Coordinating Agency (NEPAD Agency) with funding from the Wellcome Trust (UK) and the UK government. The statements made and views expressed herein are solely the responsibility of the authors."