Cheong Yuen Tong completed a 4-week online R Programming course through Coursera authorized by Johns Hopkins University. The course was taught by Jeff Leek, Roger Peng, and Brian Caffo of the Department of Biostatistics at the Johns Hopkins Bloomberg School of Public Health. Coursera verified Cheong Yuen Tong's identity and participation in the course, although the certificate does not confer academic credit or official university status.