Submitted on: 25 May 2007.
Revised on: 16 June 2007.
Accepted on: 06 August 2007.
___________________Dental and Medical Problems---WROCLAW MEDICAL UNIV
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Submitted on: 15 September 2013.
Revised on: 07 November 2013.
Accepted on: 20 November 2013.
___________________Dental and Medical Problems---WROCLAW MEDICAL UNIV
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Submitted on: 23 June 2011.
Revised on: 14 September 2011.
Accepted on: 08 November 2011.
___________________Dental and Medical Problems---WROCLAW MEDICAL UNIV