TY - RPRT TI - Chronic extradural hematomas. AU - W V TROWBRIDGE AU - R W PORTER AU - J D FRENCH PY - 1954 DO - 10.1001/archsurg.1954.01270060066009 UR - https://pubmed.ncbi.nlm.nih.gov/13206579/ ID - 13206579 ER -