[1] Navamindradhiraj Univ, Vajira Hosp, Emergency Dept, Geriatr Emergency Res Unit, 681 Samsen Rd, Bangkok 10300, Thailand
[2] Navamindradhiraj Univ, Vajira Hosp, Emergency Dept, Bangkok, Thailand
[3] Navamindradhiraj Univ, Vajira Hosp, Orthoped Dept, Bangkok, Thailand
[4] Navamindradhiraj Univ, Vajira Hosp, Dept Rehabil Med, Bangkok, Thailand
[5] Chulalongkorn Univ, Fac Med, Dept Anesthesiol, Bangkok, Thailand
[6] Suankularb Wittayalai Sch, Bangkok, Thailand