Cholera vaccines.
Ryan
E T
ET
Tropical and Geographic Medicine Center, Travelers' Advice and Immunization Center, Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.
Calderwood
S B
SB
D002771:Cholera / Q000517:prevention & control*; D022121:Cholera Vaccines; D006801:Humans; D014195:Travel
D022121:Cholera Vaccines