Frequency (number in past Mo) of chest discomfort:NRat:Pt:^Patient:Qn
frequency (number in past mo) of chest discomfort:nrat:pt:^patient:qn
Frequency (number in past Mo) of chest discomfort:NRat:Pt:^Patient:Qn
frequency (number in past mo) of chest discomfort:nrat:pt:^patient:qn