Age-based preventive targeting of food assistance and behaviour change and communication for reduction of childhood undernutrition in Haiti: A cluster randomized trial - Ruel, Marie T.; Menon, Purnima; Habicht, Jean-Pierre; Loechl, Cornelia U.; Bergeron, Gilles; Pelto, Gretel H.; Arimond, Mary; Maluccio, John; Michaud, Lesly; Hankebo, Bekele (Elsevier, 2008)