Details: correction of unit in ‘Urinary metabolites’ section
Currently reads: After an isocratic step of 2 min at 98 % phase A, a linear gradient from 0 to 100 % B was run over the next 11·0 min with a mobile phase flow of 0·2 µl/min. 0.2 ml.
This should read: After an isocratic step of 2 min at 98 % phase A, a linear gradient from 0 to 100 % B was run over the next 11·0 min with a mobile phase flow of 0·2 ml/min.