Correction: Clinical Impact of Speed Variability to Identify Ultramarathon Runners at Risk for Acute Kidney Injury

• Sen-Kuang Hou, 
• Yu-Hui Chiu, 
• Yi-Fang Tsai, 
• Ling-Chen Tai, 
• Peter C. Hou, 
• Chorng-Kuang How, 
• Chen-Chang Yang, 
• Wei-Fong Kao