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2. Health conditions for travellers to Saudi Arabia for the pilgrimage to Mecca (Hajj);Anonymous;Weekly Epidemiological Record,2007a
3. International Health Regulations: the challenges ahead;Anonymous;Lancet,2007b
4. The case for completing polio eradication;Anonymous;Weekly Epidemiological Record,2007c
5. The revised International Health Regulations and their relevance to travel medicine;Hardiman;J Travel Med,2007