Task	Author(s) responsible
Protocol stage: draft the protocol	All five authors.
Review stage: select which trials to include (2 + 1 arbiter)	Tulasi Kota Karanth and Dr KVL Karanth will independently select trials. Disagreements will be discussed with Dr BA Woodworth and Dr L Karanth.
Review stage: extract data from trials (2 people)	Tulasi Kota Karanth and Dr KVL Karanth will independently extract data from trials.
Review stage: enter data into RevMan	Tulasi Kota Karanth.
Review stage: carry out the analysis	Dr L Karanth, Dr KVL Karanth, Tulasi Kota Karanth.
Review stage: interpret the analysis	Dr L Karanth, Dr KVL Karanth, Tulasi Kota Karanth.
Review stage: draft the final review	All five authors.
Update stage: update the review	All five authors.