Arsenic, cadmium, and lead exposition: a risk factor for breast and prostate cancers? – Protocol for a systematic review - Freitas, Ligiane Gomes de; Siqueira, Flavia Ramos de; Valoto, Gabrielly Aparecida Sebin; Guerra, Paulo Henrique de Araújo; Malpartida, Humberto Miguel Garay (Research, Society and Development, 2023)