1. Kwon H, Lee PH, Song JK, Kwon SU, Kang DW, Kim JS. Patent foramen ovale closure in old stroke patients: a subgroup analysis of the DEFENSE-PFO Trial. J Stroke. 2021; 23:289–292.
2. Kim JS, Hong KS. Patent foramen ovale closure: opportunity closed in old patients? J Stroke. 2021; 23:147–148.
3. Kim JS, Thijs V, Yudi M, Toyoda K, Shiozawa M, Zening J, et al. Establishment of the heart and brain team for patent foramen ovale closure in stroke patients: an expert opinion. J Stroke. 2022; 24:345–351.
4. Farjat-Pasos JI, Chamorro A, Lanthier S, Robichaud M, Mengi S, Houde C, et al. Cerebrovascular events in older patients with patent foramen ovale: current status and future perspectives. J Stroke. 2023; 25:338–349.
5. Baik M, Shim CY, Gwak SY, Kim YD, Nam HS, Jeon S, et al. Patent foramen ovale may decrease the risk of left atrial thrombosis in stroke patients with atrial fibrillation. J Stroke. 2023; 25:417–420.