-
The CanaÂdian ConÂtiÂnence Foundation. n.d. Canada. -
CanaÂdian CanÂcer Society. n.d. Canada. -
Registered Nurses’ Association of Ontario. 2020. Canada. -
MedÂline Plus. 2023. USA. -
AmerÂiÂcan AcadÂemy of FamÂily PhysiÂcians. 2023. USA. -
Patrick J. Shenot, MD. Merck Manual. 2023. USA.