Correction: Anatomical Variations in the Sinoatrial Nodal Artery: A Meta-Analysis and Clinical Considerations

• Jens Vikse, 
• Brandon Michael Henry, 
• Joyeeta Roy, 
• Piravin Kumar Ramakrishnan, 
• Wan Chin Hsieh, 
• Jerzy A. Walocha, 
• Krzysztof A. Tomaszewski