1. Transcriptional silencing of Dickkopf gene family by CpG island hypermethylation in human gastrointestinal cancer
   Tadateru Maehata et al, 2008, World Journal of Gastroenterology CrossRef
2. Hypermethylation and aberrant expression of secreted fizzled-related protein genes in pancreatic cancer
   Xian-Min Bu et al, 2008, World Journal of Gastroenterology CrossRef