12. Guo, S., L. B. Nelson, et al. (1990). "Simultaneous surgery for bilateral congenital cataracts." J Pediatr Ophthalmol Strabismus 27(1): 23-25; discussion 26-27.

12. Guo, S., L. B. Nelson, et al. (1990). "Simultaneous surgery for bilateral congenital cataracts." J Pediatr Ophthalmol Strabismus 27(1): 23-25; discussion 26-27.