Wegmann BR, Schöneberger HJ, Kiefer PE, Jaques G, Brandscheid D, Havemann K. Molecular cloning of IGFBP-5 from SCLC cell lines and expression of IGFBP-4, IGFBP-5 and IGFBP-6 in lung cancer cell lines and primary tumours. European Journal of Cancer. 1993 Jan;29(11):1578–84. doi: 10.1016/0959-8049(93)90298-t.