Nijssen-Jordan, Cheri (July 2007). "It was time to go back". Canadian Family Physician. 53 (7). US National Library of Medicine National Institutes of Health: 1210. PMC1949313. PMID17872822.
pubmed.ncbi.nlm.nih.gov
Nijssen-Jordan, Cheri (July 2007). "It was time to go back". Canadian Family Physician. 53 (7). US National Library of Medicine National Institutes of Health: 1210. PMC1949313. PMID17872822.