Nyman, G., Oldberg Wagner, S., Prystupa-Chalkidis, K., Ryberg, K., & Hagvall, L. (2020). Contact Allergy in Western Sweden to Propolis of Four Different Origins. Acta Dermato-Venereologica, 100(16), 1–5. https://doi.org/10.2340/00015555-3615