Fidelity and adherence to a liquefied petroleum gas stove and fuel intervention: The multi-country Household Air Pollution Intervention Network (HAPIN) trial.

Williams KN, Quinn A, North H, Wang J, Pillarisetti A, Thompson LM, Díaz-Artiga A, Balakrishnan K, Thangavel G, Rosa G, Ndagijimana F, Underhill LJ, Kirby MA, Puzzolo E, Hossen S, Waller LA, Peel JL, Rosenthal JP, Clasen TF, Harvey SA, Checkley W, HAPIN Investigators