Source:
PloS one [PLoS One] 2014 Jun 30; Vol. 9 (6), pp. e101014. Date of Electronic Publication: 2014 Jun 30 (Print Publication: 2014).Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet
Source:
FP essentials [FP Essent] 2014 Mar; Vol. 418, pp. 11-9.Publisher: American Academy of Family Physicians Country of Publication: United States NLM ID: 101578821 Publication Model: Print Cited Medium: Print