Nursing shortage: an issue of quality.

Determination of catechol-O-methyltransferase activity in various tissues by liquid chromatography.

Alterations of evoked potentials link research in attention dysfunction to peptide response symptoms of schizophrenia.

Psychopathology and endorphins.

Chronic Parkinsonism secondary to intravenous injection of meperidine analogues.

Biological heterogeneity in schizophrenic patients.

Determination of serum dopamine-beta-hydroxylase activity by reverse-phase liquid chromatography with column switching.

Analgesia to painful stimuli in affective illness.

Analgesia to pain stimuli in schizophrenics and its reversal by naltrexone.

Planning for independent practice.