- Exclusion of the neuronal nicotinic acetylcholine receptor alpha7 subunit gene as a candidate for catatonic schizophrenia in a large family supporting the chromosome 15q13-22 locus. Meyer, J., Ortega, G., Schraut, K., Nürnberg, G., Rüschendorf, F., Saar, K., Mössner, R., Wienker, T.F., Reis, A., Stöber, G., Lesch, K.P. Mol. Psychiatry (2002)