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A technique of continuous intravenous anaesthesia with ketamine was used successfully during the Somalia civil war in 1994 and in north Uganda in 1999 for 64 operations in 62 patients , aged from 6 weeks to 70 years , undergoing limb and abdominal surgery including caesarian sections and interventions in neonates .
 Chemical: ketamine
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: ketamine