Determination of nandrolone and metabolites in urine samples from sedentary persons and sportsmen. - Galán Martin,A.M.; Maynar Marino,J.I.; Garcia de Tiedra,M.P.; Rivero Marabé,J.J.; Caballero Loscos,M.J.; Maynar Marino,M. (J Chromatogr B, 2001)