Article info
Research Article
Position of the apex beat in childhood.
Citation
Position of the apex beat in childhood.
Publication history
- First published July 1, 1978.
Online issue publication
March 22, 2016
Request permissions
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.