Roll-Out Implementation Optimization (ROIO) trial to develop and test the implementation of a food security screening and referral process: a study protocol. - Rhee KE; Hiller-Venegas S; Viglione C; Polich MA; Huang JS; Kim JJ; Bajwa MS; Zive M; Eichen DM; Strong DR; Stadnick NA; Brookman-Frazee L (Implementation science communications, 2026)