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APA Citation
Schaefer, F., Marr, J., Seidel, C., Tilgen, W., & Schärer, K. (1990). assessment of gonadal maturation by evaluation of spermaturia.. Archives of disease in childhood, 65(11), 1205–1207. http://access.bl.uk/ark:/81055/vdc_100137784736.0x000053