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1. Changes in contraceptive use in Bulgaria, 1995-2000.

Authors: E Carlson; V Lamb
Journal: Stud Fam Plann Date: 2001-12

Authors: B Rooney
Journal: West J Med Date: 2001-06

Authors: M S Kramer
Journal: Bull World Health Organ Date: 1987 Impact factor: 9.408

Authors:
Journal: Br Med J (Clin Res Ed) Date: 1981-05-16

Authors: C B Goodhart
Journal: Br Med J Date: 1978-05-20

Authors: J W van der Slikke; P E Treffers
Journal: Br Med J Date: 1978-02-04

Authors: A Gardiner; C Clarke; J Cowen; R Finn; O McKendrick
Journal: Br Med J Date: 1978-04-22

Authors: M B Bracken
Journal: Yale J Biol Med Date: 1978 Sep-Oct

Authors: John M Thorp
Journal: Scientifica (Cairo) Date: 2012-12-13

9 in total