ƽÌØÎå²»ÖÐ Health Centre (MUHC)Ìý
Centre hospitalier de l'Université de Montréal (CHUM)Ìý
Canadian Cancer SocietyÌý
ALS Society of CanadaÌý
National Cancer Institute (USA)
The ALS Association (USA)
Centers for Disease Control & Prevention (CDC) (USA)
Mayo Clinic (USA)
MedlinePlus (USA)
Ìý