ABSTRACT

A systematic review was carried out in several databases with Metalib tool. The search was done using a combination of a pair of key-words: “radon” and “spas” refined with “exposure” or “to water” in the subject research field. Others sources were also consulted such as databases from the Portuguese Spas Association (ATP), Turismo de Portugal, Direção Geral da Saúde (DGS), Instituto da Água, IP (INAG), Laboratório Nacional de Energia e Geologia (LNEG) and Direção-Geral de Energia e Geologia (DGEG). Master theses were also surveyed with the same key-words.