Douglas S. Paauw, MD A 45-year-old women presents for evaluation of fatigue. She has been tired for the past 6 months. She has had no problems with sleep and no other new symptoms. Her physical exam is unremarkable. Her Patient Health Questionnaire–9 score is 4. Lab results are as follows: hemoglobin, 13 g/dL; hematocrit, 39%;...