2009, Observed deaths during the spa treatment not associated with treatment itself: A case series in a spa hospital 24. April 2020 Muharrem U., et.al January 2009 Turkiye Klinikleri Journal of Medical Sciences 29(4):922-926 https://www.researchgate.net/publication/288690899_Observed_deaths_during_the_spa_treatment_not_associated_with_treatment_itself_A_case_series_in_a_spa_hospital