[The question of training--a challenge within ultrasonography].
Villén
G
G
Södersjukhuset, Stockholm. gunhild.villen@fys.sos.sll.se
Persson
L
L
D004502:Education, Medical, Continuing; D004509:Education, Nursing, Continuing; D006801:Humans; D013548:Sweden; D014463:Ultrasonography / Q000379:methods / Q000592:standards*