Jiménez Zabala, Ana Maria, Loreto Santa Marina Rodriguez, Mónica Otazua Font, Yolanda Cuetos, Mikel Etxeberria Agirresarobe, and Koldo de la Fuente Campos. 2013. “Sporadic Legionellosis: An Unsolved Problem”. Spanish Journal of Environmental Health 13 (1):73-79. https://www.ojs.diffundit.com/index.php/rsa/article/view/279.