About the Authors

Saralees Nadarajah

Contributed equally to this work with: Saralees Nadarajah, Yuanyuan Zhang

Roles Methodology

mbbsssn2@manchester.ac.uk

Affiliation School of Mathematics, University of Manchester, Manchester, M13 9PL, United Kingdom

Yuanyuan Zhang

Contributed equally to this work with: Saralees Nadarajah, Yuanyuan Zhang

Roles Methodology

Affiliation School of Mathematics, University of Manchester, Manchester, M13 9PL, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.