Ledergerber, B. ., von Overbeck, J. ., Egger, M. ., & Lüthy, R. . The Swiss HIV Cohort Study: rationale, organization and selected baseline characteristics. Sozial- Und Praventivmedizin, 39(6), 387-94. (Original work published 1994)
M Egger
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                  M
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                  Egger
            Ballif, M. ., Zürcher, K. ., Reid, S. ., Boulle, A. ., Fox, M. ., Prozesky, H. ., … Africa, I. E. D. to E. A. in S. (2018). Seasonal variations in tuberculosis diagnosis among HIV-positive individuals in Southern Africa: analysis of cohort studies at antiretroviral treatment programmes. BMJ Open, 8(1), e017405. https://doi.org/10.1136/bmjopen-2017-017405 (Original work published 2018)