Correction: Relationship between non-communicable diseases and background characteristics among homeless people in Nagoya City, Japan

• Akihiro Nishio, 
• Ryo Horita, 
• Tadahiro Sado, 
• Takahiro Watanabe, 
• Ryosuke Uehara, 
• Seiko Mizutani, 
• Mayumi Yamamoto