Use of systematic evidence maps within the US environmental protection agency (EPA) integrated risk information system (IRIS) program: Advancements to date and looking ahead. - Thayer KA; Shaffer RM; Angrish M; Arzuaga X; Carlson LM; Davis A; Dishaw L; Druwe I; Gibbons C; Glenn B; Jones R; Kaiser JP; et al. (Environment international, 2022)