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Results: 3

Authors: Gnoth, C Bremme, M Klemm, R Frank-Herrmann, P Godehardt, E Freundl, G
Citation: C. Gnoth et al., Research and quality control in natural family planning with relational database systems, ADV CONTRAC, 15(4), 1999, pp. 375-380

Authors: Freundl, G Flynn, A Frank-Herrmann, P Gnoth, C
Citation: G. Freundl et al., European multicenter study of natural family planning (1989-1995): efficacy and drop-out, ADV CONTRAC, 15(1), 1999, pp. 69-83

Authors: Freundl, G Frank-Herrmann, P Bremme, M
Citation: G. Freundl et al., Results of an efficacy-finding study (EFS) with the computer-thermometer Cyclotest 2 plus containing 207 cycles, ADV CONTRAC, 14(4), 1998, pp. 201-207
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