TY - RPRT TI - Hypocomplementemic urticarial vasculitis: association with chronic obstructive pulmonary disease. AU - H R Schwartz AU - F C McDuffie AU - L F Black AU - A L Schroeter AU - D L Conn PY - 1982 UR - https://pubmed.ncbi.nlm.nih.gov/7040825/ ID - 7040825 ER -