Serum levels of substance P are decreased in patients with type 1 diabetes - Kunt, T; Forst, T; Schmidt, S; Pfützner, A; Schneider, S; Harzer, O; Löbig, M; Engelbach, M; Goitom, K; Pohlmann, T; Beyer, J (Experimental and Clinical Endocrinology & Diabetes, 2000)