Design and rationale of the Botswana Smoking Abstinence Reinforcement Trial: a protocol for a stepped-wedge cluster randomized trial. - Bada F; Mansfield ME; Okui L; Montebatsi M; DiClemente C; Tapera R; Ikgopoleng K; Mokonopi S; Magidson JF; Onukwugha E; Ndwapi N; Himelhoch S; et al. (Implementation science communications, 2024)