Are host, agent, and environment equally important in the natural history of disease, or is one feature more critical than the others? Justify your reasoning.

Are host, agent, and environment equally important in the natural history of disease, or is one feature more critical than the others? Justify your reasoning.

 Are host, agent, and environment equally important in the natural history of disease, or is one feature more critical than the others? Justify your reasoning. 

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