Hauksson, Inese, Ann Pontén, Birgitta Gruvberger, Marléne Isaksson, and Magnus Bruze. 2010. “Routine Diagnostic Patch-Testing With Formaldehyde 2.0% (0.6mg Cm2) May Be an Advantage Compared to 1.0%”. Acta Dermato-Venereologica 90 (5):480-84. https://doi.org/10.2340/00015555-0925.