i guess you are in nursing program right? ! h* a' x. J) u0 C$ l7 Ddo not use translator. some of them do not make sense. # H) F4 M/ `: L. C6 y- e2 G# N" h" V& c: Atry to use english "answer" website. it might help # o3 Z5 v# }" Ii have one but i never use it. well, leave me messages on "duan xiao xi'