Maintenance work on the ZORA databases is scheduled for Wednesday 22 May 2019 from 20:00-22:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Beyerlein, L; Pohl, D; Delco, F; Stutz, B; Fried, M; Tutuian, R (2008). Correlation between symptoms developed after the oral ingestion of 50 g lactose and results of hydrogen breath testing for lactose intolerance. Alimentary Pharmacology & Therapeutics, 27(8):659-665.