و عندما رجعوا الى عيادتهم في امريكا قالوا انهم تَعَلّموا ان أهمية غسل اليدين قبل الجراحة كأهمية غسلها بعد الجراحة شئ في غاية البساطة
And they came back to their American clinic and they said they had learned it was as important to wash your hands before doing surgery as it was to wash up afterwards.  Something so simple.