3573
Changes in intragastric pressure after the administration of suxamethonium 1 . 5 mg kg - 1 i . v . were studied in 32 children ( mean age 6 . 9 yr ) pretreated with either physiological saline or alfentanil 50 micrograms kg - 1 .
 Chemical: suxamethonium; Chemical: alfentanil
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: suxamethonium; Chemical: alfentanil