Author hierarchy:

The order of authors may vary depending on the subject area, in the journal Magnetic Resonance in Chemistry the principal investigator, the person mostly responsible for the labour of compiling the research is positioned as the lead author with the supervisor or department head in the last position. The order of authors in between these positions should be decided between all contributors before the submission of the article. The criteria for authorship as outlined in the Committee on Publication Ethics Report, 2003 is as follows.
“Authorship credit should be based only on: (1) substantial contributions to conception and design, or acquisition of data, or analysis and interpretation of data; (2) drafting the article or revising it critically for important intellectual content; and (3) final approval of the version to be published. Conditions (1), (2), and (3) must all be met. Acquisition of funding, the collection of data, or general supervision of the research group, by themselves, do not justify authorship.” \cite{e2003}