Aim of study is to collect long term safety and tolerability data on enteric-coated mycophenolate sodium with regard to adverse events, serious adverse events, and patient and graft survival. After successful completion of study CERL080A301 study, patients who previously were on enteric-coated mycophenolate sodium or MMF were given opportunity to remain on enteric-coated mycophenolate sodium or convert from MMF to enteric-coated mycophenolate sodium.