A good rule to follow is when any two systems are involved such as heart and lungs or brain and kidneys, think of or study PHOSPHORUS._x000D_
Dr. H. W. Eisfelder
When any two systems are involved
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LeucorrhoeaA good rule to follow is when any two systems are involved such as heart and lungs or brain and kidneys, think of or study PHOSPHORUS._x000D_
Dr. H. W. Eisfelder