Stickley, A. ., & Koyanagi, A. . Physical multimorbidity and loneliness: A population-based study. PloS One, 13(1), e0191651. https://doi.org/10.1371/journal.pone.0191651 (Original work published 2018)

Oh, H. ., Stickley, A. ., Singh, F. ., & Koyanagi, A. . (2019). Self-reported asthma diagnosis and mental health: Findings from the Collaborative Psychiatric Epidemiology Surveys. Psychiatry Research, 271, 721-725. https://doi.org/10.1016/j.psychres.2018.12.046