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Collins, WE
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Sullivan, JS
Andrews, K
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Morris, CL
Jennings, V
Yang, CF
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Martin, LB
Diggs, C
Saul, A
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Authors:
Collins, WE
Sullivan, JS
Fryauff, DJ
Kendall, J
Jennings, V
Galland, GG
Morris, CL
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Citation: M. Arevalo et al., A fixed formula to define the fertile window of the menstrual cycle as thebasis of a simple method of natural family planning, CONTRACEPT, 60(6), 1999, pp. 357-360
Citation: I. Sinai et al., The TwoDay algorithm: A new algorithm to identify the fertile time of the menstrual cycle, CONTRACEPT, 60(2), 1999, pp. 65-70