Who participates in ‘participatory design’ of WASH infrastructure: A mixed-methods process evaluation - Thea L. Mink; Allison P. Salinger; Naomi Francis; Becky Batagol; Kerrie Burge; Noor Ilhamsyah; Losalini Malumu; Liza Marzaman; Michaela F. Prescott; Nur Intan Putri; Sheela S. Sinharoy (PLOS Global Public Health)