4563
BACKGROUND : Four studies published since December , 1995 , reported that the incidence of venous thromboembolism ( VTE ) was higher in women who used oral contraceptives ( OCs ) containing the third - generation progestagens gestodene or desogestrel than in users of OCs containing second - generation progestagens .
 Disease: venous thromboembolism; Disease: VTE; Chemical: oral contraceptives; Chemical: OCs; Chemical: progestagens; Chemical: gestodene; Chemical: desogestrel; Chemical: OCs; Chemical: progestagens
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: venous thromboembolism; Disease: VTE; Chemical: oral contraceptives; Chemical: OCs; Chemical: progestagens; Chemical: gestodene; Chemical: desogestrel; Chemical: OCs; Chemical: progestagens