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BACKGROUND : The use of appetite suppressants in Europe has been associated with the development of primary pulmonary hypertension ( PPH ) .
 Disease: primary pulmonary hypertension; Disease: PPH
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:
 Disease: primary pulmonary hypertension; Disease: PPH