. Author manuscript; available in PMC: 2019 Nov 12.
Published in final edited form as: Ophthalmic Epidemiol. 2018 Aug 1;25(5-6):399–402. doi: 10.1080/09286586.2018.1500616
Published with license by Taylor & Francis Group
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Figure 4.
A follicle size guide in use. (Photo: Shea Flynn/RTI International/Tropical Data, reproduced with permission).