Mzabalazo Z. Ngwenya has worked extensively in the field of statistical consulting and currently works as a biometrician. He holds an MSc degree in Mathematical Statistics from the University of Cape Town, and is currently pursuing a PhD. His research interests include statistical computing, machine learning, and spatial statistics. Previously, he was involved in reviewing Learning RStudio for R Statistical Computing, Mark P.J. van der Loo and Edwin de Jonge, Packt Publishing; R Statistical Application Development by Example Beginner's Guide, Prabhanjan Narayanachar Tattar, Packt Publishing; and Machine Learning with R, Brett Lantz, Packt Publishing.

Donato Teutonico has several years of experience in the modeling and simulation of drug effects and clinical trials in industrial and academic settings. He received his Pharm.D. degree from the University of Turin, Italy, specializing in Chemical and Pharmaceutical Technology, and his PhD in Pharmaceutical Sciences from Paris-Sud University, France.

He is the author of two R packages for Pharmacometrics: CTS template and panels-for-pharmacometrics; both are available on Google code. He is also the author of Instant R Starter, Packt Publishing.

Tengfei Yin earned his BS degree in Biological Science and Biotechnology from Nankai University in China and a PhD in Molecular, Cellular and Developmental Biology (MCDB) with a focus on computational biology and bioinformatics from Iowa State University. His research interests include information visualization, high-throughput biological data analysis, data mining, machine learning, and applied statistical genetics. He has developed and maintained several software packages in R and Bioconductor.