Year, Count, Co-author(s) 2005,8,"O'Connor, Patrick J., MD, MA, MPH; Crain, Lauren, PhD; Rush, William A., PhD; Gutenkauf, J. J.; Biltz, G. R.; Sperl-Hillen, JoAnn M., MD; Dutta, P. A.; Johnson, P. E." 2013,2,"Elliott, Thomas E., MD; Nelson, Andy F." 2015,7,"Ekstrom, Heidi L.; O'Connor, Patrick J., MD, MA, MPH; Frost, S. D.; Sharma, Rashmi; Appana, Deepa; Sperl-Hillen, JoAnn M., MD; Amundson, Jerry H." 2018,3,"Greene, S. M.; Margolis, Karen L., MD, MPH; Pronk, Nico P., PhD, MA, FACSM, FAWHP"