10. Ellis DL, Kafka SP, Chow JC, Nanney LB, Inman WH, McCadden ME, et al. Melanoma, growth factors, acanthosis nigricans, the sign of Leser-Trélat, and multiple acrochordons. A possible role for alpha-transforming growth factor in cutaneous paraneoplastic syndromes. N Engl J Med. 1987;317(25):1582-7. doi: 10.1056/nejm198712173172506. PubMed PMID: 2825016.