1 . Tajima T,Okuhara K,Satoh K,et al . Two novel aquaporin‐2 mutations in a sporadic Japanese patient with autosomal recessive nephrogenic diabetes insipi dus . Endocr J,2003,50.6 . Kishimoto T,Hirai M,Ohsawa H,et al . Manners of arginine vasopressin secr ......