Integrated standardization concept for Angelica botanicals using quantitative NMR - Godecke, T; Yao, P; Napolitano, J G; Nikolic, D; Dietz, B M; Bolton, J L; van Breemen, R B; Farnsworth, N R; Chen, S N; Lankin, D C; Pauli, G F (Fitoterapia, 2012)