Which of the following countries were NOT included in the MGRS study leading to the development of 2006 WHO growth chas?

A Multicentre Growth Reference Study was undeaken between 1997 to 2003 in 6 countries including India, Ghana, Brazil, Norway, USA and Oman. Growth related data was accumulated in 9440 healthy breast fed babies. They were followed up from 0-60 months. In 2006, the WHO growth chas were published based on these data. Ref: Park, 21st Edition, Page 502.