All submitted articles involving human experiments should be performed only in accordance with the ethical standards provided by the responsible committee of the institution and in accordance with the Declaration of Helsinki (as revised in Edinburgh 2000), available at http://www.wma.net/en/30publications/10policies/b3/index.html. This must be clearly stated in the document. Authors may be asked to provide evidence of the ethical approval. Informed oral or written permission must be obtained from human subjects, and this must be clearly stated in the methodology section. Efforts should be made to preserve patient anonymity. Ensure confidentiality of subjects by desisting from mentioning participants’ names, initials or hospital numbers, especially in illustrative material. Indeed photographs should be cropped sufficiently to prevent the recognition of human subjects being. An eye bar can be used if necessary. Animal experiments must conform to the instructions for the care and use of animals provided by the institution at which the research was carried out.