Frontal Sinusitis with Mixed Bacterial Colonies Treated with the Combination of Endoscopic Modified Lothrop Procedure and External Approach - Kazuhiro Nomura; Yohei Honkura; Yuri Okumura; Atsuko Kasajima; Takahiro Suzuki; Toshiaki Kikuchi; Hiroshi Hidaka; Takeshi Oshima; Yukio Katori (Case Reports in Otolaryngology)