我又深入煙酒了一下，發現那個who的data來自於六個國家8500個不同種族的娃，但那個Oman是哪呀？

以下為引用：

The MGRS collected primary growth data and related information from approximately 8500 children from widely different ethnic backgrounds and cultural settings (Brazil, Ghana, India, Norway, Oman and the USA). The new growth curves are expected to provide a single international standard that represents the best description of physiological growth for all children from birth to five years of age and to establish the breastfed infant as the normative model for growth and development.