candidate: A report produced by David Matas and David Kilgour cites the China International Transplantation Assistant Centre website as saying " it may take only one week to find out the suitable ( kidney ) donor , the maximum time being one month ... " By way of comparison , the median waiting time for an organ transplantation in Australia is 6 months to 4 years , in Canada , it is 6 years as of 2011 .