Pengaruh pajanan extreme low frequency pulsed electromagnetic field dalam proses penyembuhan fraktur delayed union femur tikus sprague dawley kajian terhadap skor radiologi rust dan failure load dari pemberian gaya radiologi rust dan failure load dari pemberian gaya aksial = The effect of extreme low frequency pulsed electromagnetic field exposure in the healing process of sprague dawley mouse delayed union femur fracture study of rust radiology score and failure load of axial force