The biologic mother of the patient is asked to complete a Diet History Questionnaire about diet during pregnancy, and information on demographics, lifestyle factors, medication used during pregnancy, history of breast feeding, and family history of cancer or birth defects. Parents are given ORAgene saliva collection kits for self-collection. Saliva bio-specimen samples are collected from both biologic parents and the patient. Tissue samples previously stored in a tissue bank are obtained for deceased patients, if available. DNA is extracted from samples, amplified and analyzed using real-time polymerase chain reaction (PCR) quantitation assay, and genotyped using single nucleotide polymorphisms.