Maarten van Egmond

185 Contributions of authors C CONTRIBUTIONS OF AUTHORS Chapter 2 : van Egmond MA, van der Schaaf M, Klinkenbijl JH, Engelbert RH, van Berge Henegouwen, MI. Preoperative functional status is not associated with postoperative surgical complications in low risk patients undergoing esophagectomy. Dis Esophagus. 2017 Jan 1;30(1):1-7. MAvE, MvdS and MIvBH were responsible for study conception and study design. MAvE was responsible for acquisition of data, analysis and interpretation, drafting of the manuscript and critical revision of the manuscript. MvdS and MIvBH contributed to acquisition of data, analysis and interpretation, drafting of the manuscript and critical revision of the manuscript. RHE contributed to the study conception, study design, analysis and interpretation, drafting of the manuscript and critical revision of the manuscript. JHK contributed to study conception, study design, acquisition of data, analysis and interpretation, drafting of the manuscript and critical revision of the manuscript. Chapter 3 : van Egmond MA, van der Schaaf M, Klinkenbijl JHG, Twisk JWR, Engelbert RHH, van Berge Henegouwen MI. The pre- and postoperative course of functional status in patients undergoing esophageal cancer surgery. Eur J Surg Oncol . 2020;46(1):173–179. MAvE, MvdS and MIvBH were responsible for study concepts and study design. MAvE was responsible for data acquisition, quality control of data and algorithms, data analysis and interpretation, statistical analysis, manuscript preparation, editing and review. MvdS contributed to quality control of data and algorithms, data analysis and interpretation, editing and review. RHE contributed to study concepts, study design, quality control of data and algorithms, data analysis and interpretation, editing and review. JHK contributed to study concepts, study design, data analysis and interpretation, manuscript editing and review. MIvBH contributed to data analysis and interpretation, manuscript editing and review. JT contributed to study concepts, study design, quality control of data and algorithms ,data analysis and interpretation, statistical analysis and manuscript review. Chapter 4 van Egmond MA, van der Schaaf M, Hagens ERC, van Laarhoven HWM, van Berge Henegouwen MI, Haverkort EB, Engelbert RHH, Gisbertz SS. Muscle Strength Is Associated With Muscle Mass in Patients With Esophageal Cancer Awaiting Surgery. J Geriatr Phys Ther. 2020;43(2):82-88.