1. The MOE Key Laboratory for Standardization of Chinese Medicine and Shanghai Key Laboratory of Compound Chinese MedicinesInstitute of Chinese Materia MedicaShanghai University of Traditional Chinese Medicine 1200 Cailun Road, Zhangjiang Hi‐Tech Park Shanghai 201203 P. R. China
2. Shanghai Institute of Materia MedicaChinese Academy of Sciences 501 Haike Road Shanghai 201203 P. R. China
3. Department of RadiologyUniversity of Wisconsin–Madison Madison WI 53705 USA