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Clustering of the osteogenesis imperfecta (OI) phenotypic variability groups, formed on the basis of the genotype‐phenotype variability analysis and the severity scale of clinical symptoms. Mild phenotype ‐ OI type I, moderate phenotype ‐ OI type IV, severe phenotype ‐ OI type III, and lethal phenotype ‐ OI type II.
