Correction: Supporting vulnerable families’ meal practices: process evaluation of a nationwide intervention implemented by a retailer and social organizations - Marjolijn Vos; Anneleen Van Kerckhove; Benedicte Deforche; Viktor Lowie Juliaan Proesmans; Nathalie Michels; Maartje Pieternel Poelman; Maggie Geuens; Wendy Van Lippevelde (BMC Public Health)