In chronic bronchitis and asthma Choledyl provides effective theophylline blood levels for more than 6 hours : Arctic or Richardson's skua.
- Date:
- [between 1970 and 1980?]
Licence: In copyright
Credit: In chronic bronchitis and asthma Choledyl provides effective theophylline blood levels for more than 6 hours : Arctic or Richardson's skua. Source: Wellcome Collection.
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