A new era in patent foramen ovale closure ¿ a percutaneous suture-based `deviceless¿ technique (NobleStitch®): Experience of a Portuguese center Ana Neto; Carlos Xavier Resende; Marta Tavares Silva; João Carlos Silva; Filipe Macedo;

Optimizing prognosis in atrial fibrillation: A call to action in Portugal Jorge Ferreira; Natália António; Nuno Cortez-Dias; Luciana Ricca Gonçalves; João Sargento-Freitas; Pedro von Hafe; Victor Gil;

Increased serum interleukin-6 level as a predictive biomarker for atrial fibrillation: A systematic review and meta-analysis Peng Zhou; Maieryemu Waresi; Yikai Zhao; Hung-Chen Lin; Bangwei Wu; Nanqing Xiong; Huiyang Li; Qingyu Huang; Xinping Luo; Jian Li;