Hsu-Winges C, Hamer RD, Norcia AM, Wesemann H, Chan C. (1989). Polaroid photorefractive screening of infants. J. Ped. Ophthalmol. Strab. 26: 254-60.
Hsu-Winges C, Hamer RD, Norcia AM, Wesemann H, Chan C. (1989). Polaroid photorefractive screening of infants. J. Ped. Ophthalmol. Strab. 26: 254-60.