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Yamakawa K, Gao DQ, Korenberg JR (Dec 1996). "A periodic tryptophan protein 2 gene homologue (PWP2H) in the candidate region of progressive myoclonus epilepsy on 21q22.3". Cytogenet Cell Genet. 74 (1–2): 140–5. doi:10.1159/000134402. PMID8893822.