TY - RPRT TI - Quantifying headache symptoms and other headache features from chart notes. AU - Lora A Hasse AU - P Neal Ritchey AU - Robert Smith PY - 2004 DO - 10.1111/j.1526-4610.2004.04169.x UR - https://pubmed.ncbi.nlm.nih.gov/15447696/ ID - 15447696 ER -