Ryan, N D <br/><br/>
A secular increase in child and adolescent onset affective disorder.  [electronic resource] 

 -  Journal of the American Academy of Child and Adolescent Psychiatry  Jul 1992 
 - 600-5 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0890-8567 
<br/><br/><label>Standard No.: </label>10.1097/00004583-199207000-00004  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bias<br/>Child<br/>Cohort Studies<br/>Cross-Sectional Studies<br/>Depressive Disorder--epidemiology<br/>Female<br/>Humans<br/>Male<br/>Pennsylvania--epidemiology