Limited availability of penicillin G sodium.Published in:JAMA: Journal of the American Medical Association, 1994, v. 271, n. 10, p. 742, doi. 10.1001/jama.1994.03510340028013Publication type:Article
Shortage of Intravenous Penicillin G--United States.Published in:JAMA: Journal of the American Medical Association, 1999, v. 282, n. 22, p. 2114, doi. 10.1001/jama.282.22.2114Publication type:Article