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Polish Journal of Public Health > 2015 > 124 > 3 > 148-151
Polish Journal of Public Health > 2014 > 124 > 3 > 148-151
International Journal of Nursing Studies > 2007 > 44 > 2 > 259-272
Preventive Veterinary Medicine > 1997 > 29 > 3 > 201-220