Three copies of any other closely related manuscripts in press or submitted for publication elsewhere by the authors must also be included.
All manuscripts are subject to editorial review.
Manuscripts are received with the explicit understanding that they are not under simultaneous consideration or have been rejected by any other publication. It is the author s responsibility to obtain permission to reproduce illustrations, tables, etc. Research involving live human and animal subjects must have been approved by the author s institutional review board. All clinical investigations must have been conducted according to the principles expressed in the Declaration of Helsinki. Contributors should know that one of the criteria considered in reviewing manuscripts is the humane and proper treatment of animals.