Acknowledgements
All contributors who do not meet the criteria for authorship should be listed in an Acknowledgements section. Examples of those who might be acknowledged include a person who provided purely technical help, or statistical or writing assistance. Financial and material support should also be acknowledged. Conflict of interest: A conflict of interest exists when a financial or personal relationship of the author may inappropriately influence his or her actions. Conflicts may be personal, commercial, political, academic, or financial. Some examples of financial conflicts of interest include employment, research funding (received or pending), stock or share ownership, payment for lectures or travel, consultancies and non-monetary support. Conflicts, or their absence, must be stated in writing by all authors at the time of submission of the article. The Journal may use information disclosed in conflict of interest and financial interest statements as a basis for editorial decisions. Sources of full or partial funding or other support for the research must be declared. For more information please see www.icmje.org