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Congdon N, Wang F, Tielsch JM.Congdon N, et al. Among authors: tielsch jm.Surv Ophthalmol. 1992 May-Jun;36(6):411-23. doi: 10.1016/s0039-6257(05)80022-0.Surv Ophthalmol. 1992.PMID: 1589856Free article.Review.
Sommer A, Tielsch JM, Katz J, Quigley HA, Gottsch JD, Javitt J, Singh K.Sommer A, et al. Among authors: tielsch jm.Arch Ophthalmol. 1991 Aug;109(8):1090-5. doi: 10.1001/archopht.1991.01080080050026.Arch Ophthalmol. 1991.PMID: 1867550
Tielsch JM, Katz J, Quigley HA, Miller NR, Sommer A.Tielsch JM, et al.Ophthalmology. 1988 Mar;95(3):350-6. doi: 10.1016/s0161-6420(88)33177-5.Ophthalmology. 1988.PMID: 3174002Free article.