A Novel Haplotype on GCH1 Gene, Encoding GTP Cyclohydrolase 1, Regulates Vascular Biopterin Synthesis, eNOS Coupling and Vascular Redox in Human Vessels - Antoniades, C; Shirodaria, C; Guzik, T; Van-Assche, T; Pillai, R; Lotsch, J; Tousoulis, D; Stefanadis, C; Tegeder, I; Channon, K (2008)