Liquid chromatography–mass spectrometry studies of St. John's wort methanol extraction: active constituents and their transformation

2005 ◽  
Vol 37 (2) ◽  
pp. 303-312 ◽  
Author(s):  
Frances Liu ◽  
Changkang Pan ◽  
Patrick Drumm ◽  
Catharina Y.W. Ang
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