Gu, SQ., et al. “T Lymphocyte Subpopulations in Alopecia Areata and Psoriasis: Identification With Monoclonal Antibodies and Fc Receptors”. Acta Dermato-Venereologica, vol. 63, no. 3, May 1983, pp. 244-6, doi:10.2340/0001555563244246.