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This NIH site, also available in Spanish, provides a BMI calculator as well as information on risk factors associated with obesity, resources for controlling weight, and recipes
This site presents documentation on how the physical growth curves and motor milestone windows of achievement were developed as well as application tools to support implementation of the standards
This USDA calculator for use with children 2 years of age up to those 20 years of age helps determine whether a child is at a healthy weight for his/her height, age and gender