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2 in total

1. A trial of the ovulation method of family planning in Tonga.

Authors: M C Weissmann; L Foliaki; E L Billings; J J Billings
Journal: Lancet Date: 1972-10-14 Impact factor: 79.321

Authors: J F Kerin; D K Edmonds; G M Warnes; L W Cox; R F Seamark; C D Matthews; G B Young; D T Baird
Journal: Br J Obstet Gynaecol Date: 1981-02

2 in total

5 in total

Authors:
Journal: BMJ Date: 1990-08-04

Authors: Leonard Blackwell; Delwyn Cooke; Simon Brown
Journal: Linacre Q Date: 2018-03-28

Authors: Elizabeth Tham; Karen Schliep; Joseph Stanford
Journal: Can Fam Physician Date: 2012-05 Impact factor: 3.275

Authors: R E Ryder
Journal: BMJ Date: 1993-09-18

Authors: Hsiu-Wei Su; Yu-Chiao Yi; Ting-Yen Wei; Ting-Chang Chang; Chao-Min Cheng
Journal: Bioeng Transl Med Date: 2017-05-16

5 in total