Removal of metal foreign bodies retained in the cranio-maxillofacial region under ultrasonic navigation combined with CT: report of 32 cases
FENG Hang, XING Le-jun, WANG Li, CHEN You-bai, ZHAO Rui, BU Rong-fa, ZHANG Hai-zhong
China Journal of Oral and Maxillofacial Surgery . 2017, (3): 230 -234 .  DOI: 10.19438/j.cjoms.2017.03.008