<author-notes xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML"><corresp><bold>Correspondence to:</bold>C&#259;lin Jianu, MD,
Department of Food Science, Faculty of Food Processing Technology, 
Banat's University of Agricultural Sciences and Veterinary Medicine
119 Calea Aradului, RO-300645, Timisoara, Romania
Mobile phone: 0040722632199, E-mail: calin.jianu@gmail.com
</corresp></author-notes>