Correspondence to Dr Louis C S Tan, Department of Neurology, National Neuroscience Institute, Singapore ; louis_tan{at}nni.com.sg and Dr Eng-King Tan, Department of Neurology, National Neuroscience ...
Correspondence to Dr Volker M Lauschke, Department of Physiology and Pharmacology, Section of Pharmacogenetics, Karolinska Institutet, Stockholm, SE-171, Sweden; volker.lauschke{at}ki.se Background ...