@article {1568, editor = {,}, title = {Northern lights}, volume = {161}, number = {12}, pages = {1568--1568-a}, year = {1999}, publisher = {CMAJ}, issn = {0820-3946}, URL = {https://www.cmaj.ca/content/161/12/1568.2}, eprint = {https://www.cmaj.ca/content}, journal = {CMAJ} }