[1] St Lukes Hosp Boleslawiec, Boleslawiec, Poland
[2] Wroclaw Med Univ, Fac Publ Hlth, Populat Hlth Dept, Epidemiol & Hlth Educ Unit, Wroclaw, Poland
[3] Lower Silesian Specialist Hosp, Ctr Emergency Med, Wroclaw, Poland
[4] Nonpubl Healthcare Ctr KINESIS, Bielawa, Poland
[5] Szpital Sw Tukasza Bolestawcu, Zespot Opieki Zdrowotnej Bolestawcu, Ul Jeleniogorska 4, PL-59700 Bolestawiec, Poland