02. Foster, A., C. Gilbert, et al. (1997). "Epidemiology of cataract in childhood: a global perspective." J Cataract Refract Surg 23 Suppl 1: 601-604.

02. Foster, A., C. Gilbert, et al. (1997). "Epidemiology of cataract in childhood: a global perspective." J Cataract Refract Surg 23 Suppl 1: 601-604.