TY - RPRT TI - The abnormally large frontal sinus. I. A practical method for its determination based upon an analysis of 100 normal patients. AU - M L Urken AU - P M Som AU - W Lawson AU - D Edelstein AU - G McAvay AU - H F Biller PY - 1987 UR - https://pubmed.ncbi.nlm.nih.gov/3573908/ ID - 3573908 ER -