The distribution of z-score was simulated with normal function with a sample size (n?=?10?000). The combined body weight distributions for 6- to 8-month-old male and female reference infants were constructed based on the Box-Cox power exponential method with the formula weight?=?(z-value*S*L+1)1/L*M (de Onis 2006). The WHO Child Growth Standards parameters (L, M, S) were used for the calculation (


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