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Saraiva MJ, Birken S, Costa PP, Goodman DS.Saraiva MJ, et al. Among authors: birken s.Ann N Y Acad Sci. 1984;435:86-100. doi: 10.1111/j.1749-6632.1984.tb13742.x.Ann N Y Acad Sci. 1984.PMID: 6099706
Saraiva MJ, Costa PP, Birken S, Goodman DS.Saraiva MJ, et al. Among authors: birken s.Trans Assoc Am Physicians. 1983;96:261-70.Trans Assoc Am Physicians. 1983.PMID: 6208668
Weitz JI, Landman SL, Crowley KA, Birken S, Morgan FJ.Weitz JI, et al. Among authors: birken s.J Clin Invest. 1986 Jul;78(1):155-62. doi: 10.1172/JCI112545.J Clin Invest. 1986.PMID: 3487555Free PMC article.