Serum levels of methicillin and ampicillin in newborn and premature infants in relation to postnatal age.
D000667:Ampicillin / Q000097:blood* / Q000652:urine; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007273:Injections, Intramuscular; D008712:Methicillin / Q000097:blood* / Q000652:urine
D000667:Ampicillin; D008712:Methicillin