The author offers more evidence to support Zhang's assertion in CRP 3(2) that closure of patent foramen ovale or medical therapy alone are both appropriate choices for preventing recurrent cryptogenic strokes (https://doi.org/10.22237/crp/1518739380).
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ALI H. Letter to the editor: Management of PFO: More evidence, same recommendation. Clin. Res. Prac. 2018;4(1):eP1515. doi: 10.22237/crp/1528502460