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This is the first study to measure the changing number of patients in a North American population during a period of major progress in the management of CHD said Ariane J. Marelli M.D. lead author of the study and director of the McGill Adult Unit for Congenital Heart Disease Excellence at  McGill University  in Montreal Quebec  Canada  .
 country of headquarters: McGill University, Canada
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  McGill University, Canada 
Answer:
 country of headquarters: McGill University, Canada