» Assignment of the locus for congenital lactase deficiency to 2q21, in the vicinity of but separate from the lactase-phlorizin hydrolase gene    Full text of paper by Jarvela, Enattah, Kokkonen, Varilo, Savilahti, and Peltonen.    http://www.journals.uchicago.edu/action/doSearch?searchText=Assignment+of+the+locus+for+congenital+lactase+deficiency+to+2q21%2C+in+the+vicinity+of+but+separate+from+the+lactase-phlorizin+hydrolase+gene&filter=all&x=0&y=0&cookieSet=1

» Online Mendelian Inheritance in man    Details clinical features and the current state of knowledge of the genetics of congenital lactase deficiency, also known as hereditary alactasia and as disaccharide intolerance II.    http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=223000