Abstract
In their article Jurgen Ringwald and colleagues 1 do not take into account that in the United States there are only 50,000 international normalized ratio (INR) self‐testers out of 4 million people on warfarin (1.25%).2 In the United States, travel medicine providers should understand the ways in which warfarin is managed: usual care (UC) by the patients' regular physician; Anticoagulation Clinic Care (ACC), which are specialized programs that are focused on the management of anticoagulant medications; and by patient self‐testing and patient self‐management (PST/PSM).3 Travel medicine providers should work closely with all these clinicians. The article's advice on managing elevated INR levels is beyond the scope of a Journal of Travel Medicine article because it is much …
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