PT - JOURNAL ARTICLE AU - M. Druckman TI - North of Siberia, the medical challenges are many DP - 1991 Mar 15 TA - Canadian Medical Association Journal PG - 755--755 VI - 144 IP - 6 4099 - http://www.cmaj.ca/content/144/6/755.short 4100 - http://www.cmaj.ca/content/144/6/755.full SO - CMAJ1991 Mar 15; 144