“…It was also the second Canadian-based study to accomplish this. All previous studies were based on information gathered from cerebral palsy registries or exhaustive record searches (Al-Rajeh et al, 1991;Nottidge and Okogbo, 1991;Grether et al, 1992;Hagberg et al, 1993;Murphy et al, 1993;Krageloh-Mann et al, 1994;MacGillivray and Campbell, 1995;Meberg and Broch, 1995;Hagberg et al, 1996;Pharoah et al, 1996;Sinha et al, 1997;Topp et al, 1997;Kavcic and Perat, 1998;Pharoah et al, 1998;Robertson et al, 1998;Bottos et al, 1999;Sciberras and Spencer, 1999;Colver et al, 2000;Stanley et al, 2000;Surveillance of Cerebral Palsy in Europe, 2000;Hagberg et al, 2001;Parkes et al, 2001;Topp et al, 2001;Suzuki and Ito, 2002;and Cans et al, 2004).…”