%0 Journal Article %T Maelstrom research guidelines for rigorous retrospective data harmonization %A Fortier, Isabel %A Raina, Parminder %A Van den Heuvel, Edwin R. %A Griffith, Lauren E. %A Craig, Camille %A Saliba, Matilda %A Doiron, Dany %A Stolk, Ronald P. %A Knoppers, Bartha M. %A Ferretti, Vincent %A Granda, Peter %A Burton, Paul %D 2017 %R 10.1093/ije/dyw075 %P 103-105 %J International Journal of Epidemiology %V 46 %I 1 %2 ISSN: 0300-5771