title: Reply to Commentaries: Biology and methodology - the quest for parsimonious models of a complex reality.
authors.affiliation: Epidemiology Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institute of Health, Bethesda, MD.
authors.forename: Enrique F
authors.initials: EF
authors.lastname: Schisterman
authors.forename: Brian W
authors.initials: BW
authors.lastname: Whitcomb