Circulation. 

 - [Dallas, Tex.,  :  American Heart Association],  1950- 
 - v. 
 - Weekly (except the first two weeks in Jan. and the last two weeks in Dec.),  <Apr. 8, 2003-> 
 - Monthly,  1950- 
 - v. 1- Jan. 1950- 
<br/><br/><label>ISSN: </label>0009-7322 
 = Circulation  (New York, N.Y.) 
 = Circulation  (N.Y.N.Y.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cardiology--Periodicals.<br/>Cardiovascular system--Periodicals.<br/>Hypertension --Periodicals.