RT Journal Article SR Electronic T1 Spontaneous Bronchial-Subarachnoid Fistula: An Unusual Cause of Pneumocephalus JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP S103 OP S103 VO 10 IS 5 suppl A1 Elliot J. Lerner A1 Larissa T. Bilaniuk YR 1989 UL http://www.ajnr.org/content/10/5_suppl/S103.abstract AB