Sentinel-node biopsy or nodal observation in melanoma [corrected] [published erratum appears in N ENGL J MED 2006;355(18):1944]. - Morton DL; Thompson JF; Cochran AJ; Mozzillo N; Elashoff R; Essner R; Nieweg OE; Roses DF; Hoekstra HJ; Karakousis CP; Reintgen DS; Coventry BJ; et al. (New England Journal of Medicine, 2006)