[Skip to Content]
Access to paid content on this site is currently suspended due to excessive activity being detected from your IP address 34.204.52.4. Please contact the publisher to request reinstatement.
[Skip to Content Landing]
Article
March 3, 1989

From the National Institutes of Health

JAMA. 1989;261(9):1260. doi:10.1001/jama.1989.03420090024006
×