Determination of melatonin by GC-MS: problems with solid phase extraction (SPE) columns.
Lee
C R
CR
Laboratoires d'Etudes et de Recherches Synthélabo, Bagneux, France.
Esnaud
H
H
D000818:Animals; D002851:Chromatography, High Pressure Liquid; D004285:Dogs; D008401:Gas Chromatography-Mass Spectrometry; D008550:Melatonin / Q000032:analysis*
D008550:Melatonin