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 Level 5
 
 C - Cardiovascular systemC03 - DiureticsC03E - Diuretics and potassium-sparing agents in combinationC03EA - Low-ceiling diuretics and potassium-sparing agentsC03EA01 - Hydrochlorothiazide and potassium-sparing agents
 
 Hydrochlorothiazide and potassium-sparing agents
 
 
 
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