Good review
I have used both pulmonary and critical ACCP iPad apps and found them to be very helpful. Much more convenient than lugging around books. The images, diagrams and radiographs are excellent. A benefit over the book form is that you get immediate feedback on your answer with listed references without "spoiling" answers to upcoming questions. Much better to have the continuity of feedback right after reading the question instead of flipping to the back, losing your place, trying to remember and process 5-10 questions/answers at the same time all the while running the risk of spoiling other questions. I highly encourage the pulmonary and critical ACCP apps as study aids.
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CHEST SEEK™ - American College of Chest Physicians, v3.2