Computer operating systems usually use extensions to assign appropriate applications to files. Errors related to file extensions are normally caused by absence of a relevant application to handle the file. However, the error could also be a result a problem with the registry.
A digital personal health record (PHR) is a computer-based software application that allows you to store a variety of personal health information including illnesses, hospitalizations, encounters (i.e. visits and communications), journal information in between doctor visits, medications, allergies, immunizations, surgeries, lab results, and family history. Owning and maintaining an up-to-date digital personal health record has many benefits and is the cornerstone of proactive healthcare.

















































