Acknowledgements
The authors would like to thank Assoc. Prof. Saowapark Chumpathong, MD (Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University), Khwandao Padthana, Yaowapa Ketpiboon, Sujittra Bawornsitthipong, Sukanda Mungkun, and Chanjira Daengnoi, (registered nurses at Phyathai 3 Hospital), and Nongluk Pitakwong (physical therapist at Phyathai 3 Hospital) for their technical assistance.