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22. [The sympto-thermal methods]. Parenteau-carreau S Contracept Fertil Sex (Paris); 1983 Nov; 11(11):1189-203. PubMed ID: 12312702 [TBL] [Abstract][Full Text] [Related]
23. Prospective European multi-center study of natural family planning (1989-1992): interim results. The European Natural Family Planning Study Groups. Adv Contracept; 1993 Dec; 9(4):269-83. PubMed ID: 8147240 [TBL] [Abstract][Full Text] [Related]
24. A field trial of Billings' ovulation method for spacing and limitation of birth. Sinha G; Sinha A J Indian Med Assoc; 1993 Oct; 91(10):255-6. PubMed ID: 8308307 [TBL] [Abstract][Full Text] [Related]
25. The how and why of natural family planning. Shivanandan M Cathol Update; 1985 Jun; ():1-4. PubMed ID: 12280254 [TBL] [Abstract][Full Text] [Related]
26. "Natural family planning": effective birth control supported by the Catholic Church. Ryder RE BMJ; 1993 Sep; 307(6906):723-6. PubMed ID: 8401097 [TBL] [Abstract][Full Text] [Related]
27. Contraceptive failure of the ovulation method of periodic abstinence. Trussell J; Grummer-Strawn L Fam Plann Perspect; 1990; 22(2):65-75. PubMed ID: 2189750 [TBL] [Abstract][Full Text] [Related]
28. [Family planning in Colombia -- 1987]. Trias M Profamilia; 1987 Sep; 3(9-10):5-9. PubMed ID: 12315078 [TBL] [Abstract][Full Text] [Related]
29. The role of the clinician in natural family planning. Klaus H J Am Coll Health; 1983 Dec; 32(3):114-20. PubMed ID: 6672043 [TBL] [Abstract][Full Text] [Related]
30. [Contraception and sexology]. Black JS Cah Sexol Clin; 1991; 17(102):45-53. PubMed ID: 12344892 [TBL] [Abstract][Full Text] [Related]
31. [The new policies of natural birth control]. Johnson JH; Reich J Perspect Internation Plan Fam; 1986; (Special):27-31. PubMed ID: 12280673 [TBL] [Abstract][Full Text] [Related]
32. Weighing risks against benefits in contraceptive safety. Akhter HH Draper Fund Rep; 1983 Aug; (12):20-2. PubMed ID: 12338977 [TBL] [Abstract][Full Text] [Related]
33. The World Fertility Survey: charting global childbearing. Lightbourne R ; Singh S; Green CP Popul Bull; 1982 Mar; 37(1):1-55. PubMed ID: 12311520 [TBL] [Abstract][Full Text] [Related]
34. 'Natural' methods of family planning. Jones M Fertil Contracept; 1978 Oct; 2(4):55-8. PubMed ID: 12260793 [TBL] [Abstract][Full Text] [Related]
35. FDA gives final approval to Depo amid concerns over safety, cost and coercion. Wash Memo Alan Guttmacher Inst; 1992 Nov; (17):2-3. PubMed ID: 12344620 [TBL] [Abstract][Full Text] [Related]
36. Attitudes of some couples using natural family planning. Heffernan V Communio; 1977; 4(1):94-6. PubMed ID: 12263428 [TBL] [Abstract][Full Text] [Related]
37. Methods of birth control. Choice is yours. Hingorani V Yojana; 1984 Oct 16-31; 28(19):33-4. PubMed ID: 12340097 [TBL] [Abstract][Full Text] [Related]
39. The new politics of natural family planning. Johnson JH; Reich J Fam Plann Perspect; 1986; 18(6):277-8,281-2. PubMed ID: 3817124 [TBL] [Abstract][Full Text] [Related]