A growth pattern that is normal for the first half year of life with growth failure and partial recovery during the next three or four years is common in many developing countries. Biochemical evidence of anemia, hypoproteinemia, and a varying spectrum of relative vitamin deficiency is also found. Similar patterns for growth and biochemical findings were found in a group of hospitalized infants in the United States. The multiple conditioning factors in the development of these patterns are emphasized.
Calvin Woodruff. Nutritional Aspects of Metabolism of Growth and Development. JAMA. 1966;196(3):214–218. doi:10.1001/jama.1966.03100160064019