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Dorothy A. Campbell, Eva L. Tonks, and Mary Jones
Br J Ophthalmol 1956; 40: 283-294. doi:10.1136/bjo.40.5.283
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Frederick Ridley
Br J Ophthalmol 1956; 40: 295-304. doi:10.1136/bjo.40.5.295
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J. François, G. Verriest, and A. De Rouck
Br J Ophthalmol 1956; 40: 305-312. doi:10.1136/bjo.40.5.305
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