Itoh T, Sawabu N, Motoo Y, Funakoshi A, Teraoka H. The human pancreatitis-associated protein (PAP)-encoding gene generates multiple transcripts through alternative use of 5' exons. Gene. 1995 Apr 03;155(2):283–7. doi: 10.1016/0378-1119(94)00799-x. PMID: 7721106.