A 72 year old patient is having a preoperative evaluation. T…
A 72 year old patient is having a preoperative evaluation. They state they have quit smoking for one year, but had smoked 1 pack of cigarettes every day for 20 years, and then cut back to 1/2 a pack of cigarettes a day for the next 30 years. Calculate their approximate total pack years of smoking. Enter a whole number only.
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