Intranasal administration of His-D-Trp-Ala-Trp-D-Phe-LysNH2 (growth hormone releasing peptide) increased plasma growth hormone and insulin-like growth factor-I levels in normal men - Hayashi, S; Okimura, Y; Yagi, H; Uchiyama, T; Takeshima, Y; Shakutsui, S; Oohashi, S; Bowers, C Y; Chihara, K (Endocrinol Jpn, 1991)