Doctors and drops.
Gallagher
G
G
Charing Cross Hospital, London.
Mackay
I
I
D001623:Betamethasone / Q000008:administration & dosage*; D006801:Humans; D007322:Instillation, Drug; D010254:Paranasal Sinus Diseases / Q000188:drug therapy*; D011187:Posture
D001623:Betamethasone