1408
OBJECTIVE : This study investigated the efficacy and tolerability of valsartan ( VAL ) or hydrochlorothiazide ( HCTZ ) - monotherapy and higher - dose combinations in patients with essential hypertension .
 Chemical: valsartan; Chemical: VAL; Chemical: hydrochlorothiazide; Chemical: HCTZ; Disease: essential hypertension
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: valsartan; Chemical: VAL; Chemical: hydrochlorothiazide; Chemical: HCTZ; Disease: essential hypertension