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.
Braveman BH, Helfrich CA, Fisher GS.Braveman BH, et al.Occup Ther Health Care. 2002;15(1-2):109-25. doi: 10.1080/J003v15n01_12.Occup Ther Health Care. 2002.PMID: 23944340
Hammel J, Finlayson M, Kielhofner G, Helfrich CA, Peterson E.Hammel J, et al.Occup Ther Health Care. 2002;15(1-2):157-76. doi: 10.1080/J003v15n01_15.Occup Ther Health Care. 2002.PMID: 23944343
Helfrich CA, Fogg LF.Helfrich CA, et al.J Prim Prev. 2007 Jul;28(3-4):313-26. doi: 10.1007/s10935-007-0103-y. Epub 2007 Jun 1.J Prim Prev. 2007.PMID: 17541828Free article.