The Impact of the COVID-19 Pandemic on the Experiences and Operations of Sponsors of the Summer Food Service Program in Maryland, USA: A Multiphase Mixed Methods Study oleh Stacy V. Lu, Kaitlyn M. Harper, Yoyo Ding, Jordan Everett, Julia Gross, Rachael Borman, Karen Medina-Perez, Brielle Pinzini, Michael J. Wilson, Susan M. Gross