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Jansen M, van Schaik FM, Ricker AT, Bullock B, Woods DE, Gabbay KH, Nussbaum AL, Sussenbach JS, Van den Brande JL (1983). "Sequence of cDNA encoding human insulin-like growth factor I precursor". Nature. 306 (5943): 609–11. Bibcode:1983Natur.306..609J. doi:10.1038/306609a0. PMID6358902. S2CID4336584.