[1] Weifang Med Univ, Sch Nursing, Weifang, Peoples R China
[2] Heze Med Coll, Sch Nursing, Linyi Rescue Management Stn, Heze, Peoples R China
[3] Heze Med Coll, Sch Nursing, Heze, Peoples R China
[4] East Carolina Univ, Coll Nursing, Tenure Track Fac, Greenville, NC 27858 USA