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Petersen, Maya; Yiannoutsos, Constantin T.; Justice, Amy; Egger, Matthias (2014). Observational Research on NCDs in HIV-Positive Populations: Conceptual and Methodological Considerations. Journal of acquired immune deficiency syndromes JAIDS, 67(Suppl 1), S8-S16. Lippincott Williams & Wilkins 10.1097/QAI.0000000000000253
