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Question 1 of 2
1. Question
Question 1 of 2
An HIV-positive patient with a two-day history of fever is seen by three doctors in the hospital. Two of the doctors record crackles in the left lung base and diagnose community-acquired pneumonia. The third doctor reports clear lungs. Which of the following phrases best describes the role of auscultation as a diagnostic tool in this case?
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Question 2 of 2
2. Question
Question 2 of 2
A case-control study is conducted to assess the role of occupational exposure to certain chemicals in the development of pancreatic cancer. The study fails to demonstrate an association between documented exposures and pancreatic cancer. Which of the following does not affect validity of the study?
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