Columbia subject headings:
Bordetella pertussis--Congresses.
Pertussis toxin--Congresses.
Pertussis vaccines--Congresses.
Whooping cough--Congresses.
Harvard subject headings:
Bordetella pertussis--Congresses.
Pertussis toxin--Congresses.
Pertussis vaccines--Congresses.
Whooping cough--Congresses.
Princeton subject headings:
Bordetella pertussis--Congresses.
Pertussis toxins--Congresses.
Pertussis vaccines--Congresses.
Whooping cough--Congresses.