Hershfield, M. S., Meuwissen, H. J., & Hirschhorn, R. (2014). ADA Deficiency - The First Described Genetic Defect Causing PID. In PRIMARY IMMUNODEFICIENCY DISORDERS: A HISTORIC AND SCIENTIFIC PERSPECTIVE (pp. 256–267).

Hershfield, Michael S., Hilaire J. Meuwissen, and Rochelle Hirschhorn. “ADA Deficiency - The First Described Genetic Defect Causing PID.” In PRIMARY IMMUNODEFICIENCY DISORDERS: A HISTORIC AND SCIENTIFIC PERSPECTIVE, 256–67, 2014.

Hershfield MS, Meuwissen HJ, Hirschhorn R. ADA Deficiency - The First Described Genetic Defect Causing PID. In: PRIMARY IMMUNODEFICIENCY DISORDERS: A HISTORIC AND SCIENTIFIC PERSPECTIVE. 2014. p. 256–67.

Hershfield, Michael S., et al. “ADA Deficiency - The First Described Genetic Defect Causing PID.” PRIMARY IMMUNODEFICIENCY DISORDERS: A HISTORIC AND SCIENTIFIC PERSPECTIVE, 2014, pp. 256–67.

Hershfield MS, Meuwissen HJ, Hirschhorn R. ADA Deficiency - The First Described Genetic Defect Causing PID. PRIMARY IMMUNODEFICIENCY DISORDERS: A HISTORIC AND SCIENTIFIC PERSPECTIVE. 2014. p. 256–267.