- Postaxial polydactyly type A/B (PAP-A/B) is linked to chromosome 19p13.1-13.2 in a Chinese kindred. Zhao, H., Tian, Y., Breedveld, G., Huang, S., Zou, Y., Y, J., Chai, J., Li, H., Li, M., Oostra, B.A., Lo, W.H., Heutink, P. Eur. J. Hum. Genet. (2002)