title: Preface.
authors.affiliation: Scientific Advisory Committee of the International Council for Amino Acid Science, Brussels, Belgium; Clinical Chemistry Laboratory, Cochin Hospital, Paris, France; and Biological Nutrition Laboratory and EA 4466, Faculty of Pharmacy, Paris Descartes University, Paris, France luc.cynober@aphp.fr.
authors.forename: Luc
authors.initials: L
authors.lastname: Cynober