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APA Citation
Kampmann, C., Wiethoff, C. M., Wenzel, A., Stolz, G., Betancor, M., Wippermann, C., Huth, R., Habermehl, P., Knuf, M., Emschermann, T., & Stopfkuchen, H. (2000). normal values of M mode echocardiographic measurements of more than 2000 healthy infants and children in central Europe. Heart, 83(6), 667–672. http://access.bl.uk/ark:/81055/vdc_100137783654.0x000013