Evidence of an unusual pattern of polychlorinated biphenyls in the serum of some residents and canines in Paoli, Pennsylvania. - Burse VW; Groce DF; Korver MP; Caudill SP; McClure PC; Lapeza CR Jr; Head SL; Schilling RJ; Farrar JA; Ostrowski SR (Journal - Association of Official Analytical Chemists, 1991)