character: Doctor Dan
topic: Consequences of Vitamin D Deficiency
grade: 9
subject: Science
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character: Doctor Dan
topic: Vitamin D Sources and Importance
grade: 9
subject: Science
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character: Doctor Dan
topic: Symptoms of Vitamin D Deficiency
grade: 9
subject: Science
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character: Doctor Dan
topic: Effects of Vitamin D on Bone Health
grade: 9
subject: Science
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