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PURPOSE : This retrospective study used a pharmaceutical company ' s global safety database to determine the reporting rate of hyponatremia and / or syndrome of inappropriate secretion of anti - diuretic hormone ( SIADH ) among vincristine - treated patients and to explore the possibility of at - risk population subgroups .
 Disease: hyponatremia; Disease: syndrome of inappropriate secretion of anti - diuretic hormone; Disease: SIADH; Chemical: vincristine
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: hyponatremia; Disease: syndrome of inappropriate secretion of anti - diuretic hormone; Disease: SIADH; Chemical: vincristine