University of ModenaItaly
Universidad de SalamancaSpain
University of SiedlcePoland
University of North CarolinaChapel Hill
Jichi Medical University HospitalJapan
Qingdao Municipal HospitalChina
University of JapanJapan
Isala HosipitalNetherlands
Federal University of Alagoas Brazil
Apollonion Private Hospital Of Lefkosia, Cyprus
Aristotle University of ThessalonikiGreece
University of CaliforniaUSA
