Heward, J., Gordon, C., Allahabadia, A., Barnett, A., Franklyn, J., & Gough, S. (1999). The A-G polymorphism in exon 1 of the CTLA-4 gene is not associated with systemic lupus erythematosus.

Heward, J., C. Gordon, A. Allahabadia, A. Barnett, J. Franklyn, ja S. Gough. The A-G Polymorphism in Exon 1 of the CTLA-4 Gene Is Not Associated With Systemic Lupus Erythematosus. 1999.

Heward, J., et al. The A-G Polymorphism in Exon 1 of the CTLA-4 Gene Is Not Associated With Systemic Lupus Erythematosus. 1999.