What fields of the natural sciences are present in this passage about Snow’s work in anesthesiology ?

Medical sciences and chemistry.

Explanation:

Snow’s work in anesthesiology refers to the field of medical and chemistry because he used different chemicals such as ether, amylene and chloroform which belongs to chemistry on his patients which shows the medical field. He was a physician and also the founder of the discipline anesthesiology in which he performed many experiments to see the effect of different doses of anesthesia on the human body.

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