This paper is in the following e-collections/theme issues:

Internet-based Survey & Research Methodology  Mobile Health (mhealth)  Research Instruments, Questionnaires, and Tools 

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Works citing "Validation and Reliability of a Smartphone Application for the International Prostate Symptom Score Questionnaire: A Randomized Repeated Measures Crossover Study"

Jae Heon Kim, Soon-Sun Kwon, Sung Ryul Shim, Hwa Yeon Sun, Young Myoung Ko, Dong-Il Chun, Won Jae Yang, Yun Seob Song
J Med Internet Res 2014 (Feb 10); 16(2):e38 

According to Crossref, the following articles are citing this article (DOI 10.2196/jmir.3042):

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

1. Lewis TL, Boissaud-Cooke MA, Aungst TD, Eysenbach G. Consensus on Use of the Term “App” Versus “Application” for Reporting of mHealth Research. Journal of Medical Internet Research 2014;16(7):e174 [CrossRef]