Nurses break the ice.
D001110:Arctic Regions; D002170:Canada; D004630:Emergencies / Q000451:nursing; D006076:Government; D006801:Humans; D008297:Male; D009326:Naval Medicine; D009722:Nurse Practitioners; D009785:Occupational Health Nursing; D009786:Occupational Health Services / Q000600:supply & distribution; D012767:Ships