Changes in n-3 and n-6 fatty acids in plasma and circulatory cells of normal subjects, after prolonged administration of 20: 5 (EPA) and 22: 6 (DHA) ethyl esters and prolonged washout - Marangoni, F; Angeli, MT; Colli, S; Elegini, S; Tremoli, S; Sirtori, CR; Galli, C (Biochem Biophys Acta, 1993)