nikakih 4 mesyazev ne nado.Prof Graf 2 raza vgod organizuet kurs Hip US, kotoryi dlitsya 3-4 dnya.Vy poluchite cerificat.Sam kurs erunda, opyt pridet vprocesse raboty.Cherez pol goda sami smoghete provodit kurs/ Udachi Mark Eidelman Head of Pediatric Orthopedics,Rambam Hospital, Haifa,Israel.