Contribution of authorship
Authors contributed to the conception (MD, JM, BW, HIS), planning (MD,
BZ, VN, NV, HH, JM, BW, HIS), carrying out (MD, BZ, VN, NV, BW, HIS),
analysis (MD, BZ, VN) and writing up (MD, BZ, VN, NV, HH, JM, BW, HIS)
of the work.