CJCP     2001 3 (6):  723-725    ISSN: 1008-8830  CN: 43-1301/R Discussion on difficult feeding,behindhand growth and development,hypercalcemia and hypophopatasia ZHANG Bi-Li, YANG Xuan, HUANG Le, MA Da-Zhi, HU Jian Received: null  Revised: null  Online: null Supporting info