Toma, Salvatore <br/><br/>
beta-carotene supplementation in patients radically treated for stage I-II head and neck cancer: results of a randomized trial.  [electronic resource] 

 -  Oncology reports   
 - 1895-901 p.  digital 
<br/><br/> Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial 
<br/><br/><label>ISSN: </label>1021-335X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Aged<br/>Antioxidants--pharmacology<br/>Carcinoma, Squamous Cell--mortality<br/>Cardiovascular Diseases--epidemiology<br/>Dietary Supplements<br/>Disease-Free Survival<br/>Female<br/>Head and Neck Neoplasms--mortality<br/>Humans<br/>Male<br/>Middle Aged<br/>Time Factors<br/>Treatment Outcome<br/>beta Carotene--therapeutic use