Multiplexed quantification of proglucagon-derived peptides by immunoaffinity enrichment and tandem mass spectrometry after a meal tolerance test - Lee, AY; Chappell, D L; Bak, M J; Judo, M; Liang, L; Churakova, T; Ayanoglu, G; Castro-Perez, J; Zhou, H; Previs, S; Souza, S C; Lassman, M E; Laterza, O F (Clin Chem, 2016)