Laaksonen, M.A., Virtala, E., Knekt, P., Oja, H. and Härkänen, T. 2011. SAS Macros for Calculation of Population Attributable Fraction in a Cohort Study Design. Journal of Statistical Software. 43, 7 (Jul. 2011), 1–25. DOI:https://doi.org/10.18637/jss.v043.i07.