TY - RPRT TI - Thunderclap headache from complicated sinusitis. AU - Brian E McGeeney AU - Glenn Barest AU - Gregory Grillone PY - 2006 DO - 10.1111/j.1526-4610.2006.00386_2.x UR - https://pubmed.ncbi.nlm.nih.gov/16618275/ ID - 16618275 ER -