Lewis CC, Stanick C, Lyon A, Darnell D, Locke J, Puspitasari A, Marriott BR, Dorsey CN, Larson M, Jackson C, Thayer J, Bailey CW, Lengnick-Hall R, Dorsey S, Landes SJ. Proceedings of the Fourth Biennial Conference of the Society for Implementation Research Collaboration (SIRC) 2017: implementation mechanisms: what makes implementation work and why? part 1. Implement Sci. 2018 03 20; 13(Suppl 2):30.