A syndromic approach to assess diagnosis and management of patients presenting with respiratory symptoms to healthcare facilities in Vietnam oleh Wan-Chun Huang, Gregory J. Fox, Ngoc Yen Pham, Thu Anh Nguyen, Van Giap Vu, Quy Chau Ngo, Viet Nhung Nguyen, Stephen Jan, Joel Negin, Thi Tuyet Lan Le, Guy B. Marks