An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Pereira MS, Chakraverty P, Schild GC, Coleman MT, Dowdle WR.Pereira MS, et al. Among authors: chakraverty p.Br Med J. 1972 Dec 23;4(5842):701-3. doi: 10.1136/bmj.4.5842.701.Br Med J. 1972.PMID: 4646846Free PMC article.
Schild GC, Pereira MS, Chakraverty P, Coleman MT, Dowdle WR, Chang WK.Schild GC, et al. Among authors: chakraverty p.Br Med J. 1973 Oct 20;4(5885):127-31. doi: 10.1136/bmj.4.5885.127.Br Med J. 1973.PMID: 4201694Free PMC article.