Clouds, skin color, and rickets.
D001741:Black or African American; D001942:Breast Feeding; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012279:Rickets / Q000209:etiology*; D012880:Skin Pigmentation; D014481:United States; D014808:Vitamin D Deficiency / Q000209:etiology*