- Correspondence to Dr Pham Thi Hoang Anh, Postal address: HealthBridge Foundation of Canada, Rooms 202 & 203, Building E4, TrungTu Diplomatic Compound, No. 6 Dang Van Ngu street, Dong Da district, Hanoi 0084, Vietnam;
- Received June 9, 2014
- Revised November 24, 2014
- Accepted November 25, 2014
- First published December 15, 2014.
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