Long-term safety and efficacy of glycerol phenylbutyrate for the management of urea cycle disorder patients

George A. Diaz, Andreas Schulze, Nicola Longo, William Rhead, Annette Feigenbaum, Derek Wong, J. Lawrence Merritt, William Berquist, Renata C. Gallagher, Dennis Bartholomew, Shawn E. McCandless, Wendy E. Smith, Cary O. Harding, Roberto Zori, Uta Lichter-Konecki, Jerry Vockley, Colleen Canavan, Thomas Vescio, Robert J. Holt, Susan A. Berry