Thirty reprints are supplied free of charge. Additional reprints may be purchased by ordering when page proofs are returned. Policy on animal treatment. All animal experimentation reported in the journal must have been conducted in accordance with the pertinent national statements regarding the care and use of animals in the country of residence of the principal author. In submitting a paper each author will be assumed to have conscientionsly abided by these principles.
Animal welfare is of paramount concern in reviewing the methods section of a submitted manuscript.