i guess you are in nursing program right? ( v- R2 \/ f9 c1 {do not use translator. some of them do not make sense. * m% w% _7 T1 _! otry to use english "answer" website. it might help & J: o% T9 L7 @. E( i, Ni have one but i never use it. well, leave me messages on "duan xiao xi'