Rosenthal, N E <br/><br/>
Plasma melatonin as a measure of the human clock.  [electronic resource] 

 -  The Journal of clinical endocrinology and metabolism  Aug 1991 
 - 225-6 p.  digital 
<br/><br/> Publication Type: Editorial; Review 
<br/><br/><label>ISSN: </label>0021-972X 
<br/><br/><label>Standard No.: </label>10.1210/jcem-73-2-225  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biomarkers--blood<br/>Circadian Rhythm<br/>Humans<br/>Melatonin--blood