1. Department of Physical Medicine & Rehabilitation, The Medical City South Luzon, Santa Rosa, Laguna, 4026, Philippines
2. SMARTMD Center for Non-Surgical Pain Interventions, Makati, 1224, Philippines
3. Makati Medical Center, Makati, Philippines
4. Kansas City University, Kansas City, MO 64106, USA
5. Pain Management, Ventura County Medical Center, Ventura, CA 93003, USA
6. GCC Institute for Regenerative Medicine, Irvine, CA 92606, USA