J. Hoelzer

Prevalence of respiratory symptoms in school children and salivary IgA--an epidemiological study in a rural area of Northrhine-Westphalia, Germany.

U. Ewers, M. Wilhelm, H. Idel, 2002, International journal of hygiene and environmental health.

Aluminum load in ICU patients during stress ulcer prophylaxis.

C. Ohmann, M. Wilhelm, J. Hoelzer, 2006, European journal of internal medicine.

Aluminum balance in intensive care patients.

C. Ohmann, M. Wilhelm, J. Hoelzer, 2001, Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements.