title: Crossing the divide: expanding the scope of operational research in Public Health Action.
authors.affiliation: Médecins Sans Frontières, Operational Centre Brussels, Medical Department, Operations Research Unit, MSF-Luxembourg, Luxembourg.
authors.forename: Rony
authors.initials: R
authors.lastname: Zachariah
authors.affiliation: Institute of Tropical Medicine, Antwerp, Belgium.
authors.forename: Johan
authors.initials: J
authors.lastname: van Griensven