1. Bhumirajanagarindra Kidney Institute Bangkok Thailand
2. Khlong Lan Hospital Kamphaeng Phet Thailand
3. Phran Kratai Hospital Kamphaeng Phet Thailand
4. Saithong Wattana Hospital Kamphaeng Phet Thailand
5. Lan Krabue Hospital Kamphaeng Phet Thailand
6. Khlong Khlung Hospital Kamphaeng Phet Thailand
7. Department of Medicine King Chulalongkorn Memorial Hospital, Chulalongkorn University Bangkok Thailand