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Beshyah SA, Thomas E, Kyd P, Sharp P, Fairney A, Johnston DG.Beshyah SA, et al. Among authors: johnston dg.Clin Endocrinol (Oxf). 1994 Mar;40(3):383-91. doi: 10.1111/j.1365-2265.1994.tb03936.x.Clin Endocrinol (Oxf). 1994.PMID: 8187303Clinical Trial.