UPPER RESPIRATORY ILLNESSES IN NAVAL PERSONNEL.
D004739:England; D006801:Humans; D009326:Naval Medicine; D012141:Respiratory Tract Infections; D012282:Rickettsia Infections; D013223:Statistics as Topic; D013290:Streptococcal Infections; D014777:Virus Diseases
ENGLAND; NAVAL MEDICINE; RESPIRATORY TRACT INFECTIONS; RICKETTSIAL DISEASES; STATISTICS; STREPTOCOCCAL INFECTIONS; VIRUS DISEASES