system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All are unique features of WHO growth chas 2006 except
assistant
The correct answer is  WHO growth chas are based on multicentre growth reference study( MGRS) conducted in 6 countries all over the world. Brazil Norway Ghana Oman US India Ref: Nelson's ,20th edition, Page 84-89