[1
]
Swiss Tropical and Public Health Institute, Socinstrasse 55, P.O. Box, CH-4000 Basel,
Switzerland; University of Basel, Basel, Switzerland. Electronic address: katrin.uehli@unibas.ch.
[2
]
Swiss Tropical and Public Health Institute, Socinstrasse 55, P.O. Box, CH-4000 Basel,
Switzerland; University of Basel, Basel, Switzerland; Harvard School of Public Health,
Landmark Center West 415, 401 Park Dr., Boston, MA 02215, USA.
[3
]
University of Basel, Basel, Switzerland; Clinic of Internal Medicine, University Hospital
of Basel, Petersgraben 4, CH-4031 Basel, Switzerland.
[4
]
Swiss Tropical and Public Health Institute, Socinstrasse 55, P.O. Box, CH-4000 Basel,
Switzerland; University of Basel, Basel, Switzerland.
[5
]
University of Basel, Basel, Switzerland; Psychiatric University Clinics, Wilhelm Klein-Strasse
27, CH-4012 Basel, Switzerland.