Systemic lupus erythematosus in three ethnic groups: I. The effects of HLA class II, C4, and CR1 alleles, socioeconomic factors, and ethnicity at disease onset. LUMINA Study Group. Lupus in minority populations, nature versus nurture.
Reveille JD, Moulds JM, Ahn C, Friedman AW, Baethge B, Roseman J, Straaton KV, Alarcón GS. Arthritis Rheum. 1998 Jul; 41(7):1161-72.