Year, Count, Co-author(s) 2015,6,"Olson, D.; Sikka, Robby S., MD; Widstrom, L.; Christensen, T.; Nelson, B. D.; Galagedera, N." 2017,7,"Olson, D.; Renier, C. M.; Sikka, Robby S., MD; Widstrom, L.; Christensen, T.; Paulson, W.; Nelson, B."