0
June 1932, Vol 43, No. 6 >
Other Articles | June 1932

SEASONAL VARIATION IN ANTIRACHITIC ACTION OF ARKANSAS SUNSHINE

PAUL L. DAY, PH.D.
Am J Dis Child. 1932;43(6):1455-1460. doi:10.1001/archpedi.1932.01950070024002.
Text Size: A A A
Published online
Article
References
Comments

A distinct seasonal variation in the antirachitic action of sunlight has been demonstrated by Tisdall and Brown at Toronto.1 Similar variations have been shown in the ultraviolet intensities of sunshine at Baltimore2 and Chicago3 by photochemical rather than by biologic methods. On the other hand, Lewis, Frumess and Stein4 have recently published data showing no such variation in the sunshine at Denver. The experiments on this subject published prior to 1930 together with the various methods employed have been carefully reviewed by Blunt and Cowan.5

Although severe rickets is less commonly found in the southern states than in northern cities, the incidence is far greater than can be justified in the light of the present knowledge of the etiology and prevention of this disease. Williams6 wrote in 1928: "Severe rickets is extremely rare in New Orleans and vicinity, but a mild form of the

Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
First page PDF preview

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

References

Correspondence

Submit a Letter
CME
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Clear Answers | Save For Later
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s “Cited By” API will populate this tab (http://www.crossref.org/citedby.html).
Compression-Only CPR: Pushing the Science Forward
Cone
AAM 2010;304:1493-1495.
All you need to read in the other general journals
BMJ 2010;341:c5893-c1494.
Submit a Comment

Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs

More Listings at
JAMACareerCenter.com >

© 2013 American Medical Association. All Rights Reserved.
Powered bySilverchair Information Systems