Dear Jens Lauritsen,

I just want to thank you for your answers to all of our questions. We really appreciate it!

Best regards, Leticia Grize

Leticia Grize PhD Biostatistics Unit Department of Epidemiology and Public Health Swiss Tropical and Public Health Institute Office address: Eulerstrasse 77, Basel Phone: +41-(0)61-284-87-12 Fax: +41-(0)61-284-81-01 Email: leticia.grize@swisstph.ch Postal address: Swiss TPH / P.O. Box / CH-4002 Basel / Switzerland STPH website: http://www.Swisstph.ch

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