Experiences in prevention of upper respiratory infections in general pediatric practice; preliminary report.
D005194:Family Practice; D058006:General Practice; D010406:Penicillins / Q000031:analogs & derivatives; D012137:Respiratory System; D012140:Respiratory Tract Diseases; D012141:Respiratory Tract Infections
D010406:Penicillins
PENICILLIN/related compounds; RESPIRATORY TRACT/diseases