Frequent mutation of p16, rare mutation of p15, and frequent LOH at 9p21 in primary human esophageal cancers: H. Suzuki, X-L. Zhou, L. Tannin, G.J. Hannon∗, H-Y. Jiang, J. Yin, Y. Suzuki, J.M. Abraham, S.J. Meltzer. Department of Medicine/GI Division, University of Maryland/Veterans Affairs Hospitals, Baltimore, MD and ∗Cold Spring Harbor Laboratories, Cold Spring Harbor, NY