Olsson, I., von Stedingk, L. V., Hanson, H. S., von Stedingk, M., Asbrink, E., & Hovmark, A. (1991). Comparison of four different serological methods for detection of antibodies to Borrelia burgdorferi in erythema migrans. Acta Dermato-Venereologica, 71(2), 127–133. https://doi.org/10.2340/0001555571127133