This paper is in the following e-collection/theme issue:

Email & Web-Based Communication 

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Works citing "Patients’ Reported Reasons for Non-Use of an Internet-Based Patient-Provider Communication Service: Qualitative Interview Study"

Cecilie Varsi, Deede Gammon, Torunn Wibe, Cornelia M Ruland
J Med Internet Res 2013 (Nov 11); 15(11):e246 

According to Crossref, the following articles are citing this article (DOI 10.2196/jmir.2683):

(note that this is only a small subset of citations)

1. Haun JN, Lind JD, Shimada SL, Martin TL, Gosline RM, Antinori N, Stewart M, Simon SR. Evaluating User Experiences of the Secure Messaging Tool on the Veterans Affairs’ Patient Portal System. Journal of Medical Internet Research 2014;16(3):e75 [CrossRef]