Open Study of BAY77-1931 (Lanthanum Carbonate) in Continuous Ambulatory Peritoneal Dialysis Patients

Inclusion Criteria: * Serum phosphate levels: \>5.0 mg/dL and \<11.0 mg/dL 2 weeks after the initiation of the washout period * Out-patient * Undergoing CAPD for at least previous 3 consecutive months Exclusion Criteria: * Who may not enable to continue CAPD * Serum phosphate levels of \>=10.0 mg/dL at the start of the washout period or \>=11.0 mg/dL 2 week after * Corrected serum calcium level of \<7.0 mg/dL at the start of the washout period or \>=11.0 mg/dL 2 week after * Serum intact PTH (Parathyroid) of \>=1000 pg/mL at the start of the washout period * Pregnant woman, or lactating mother * Significant gastrointestinal disorders including known acute peptic ulcer * Liver dysfunction * History of cardiovascular or cerebrovascular diseases