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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1965 1
1966 5
1967 13
1968 12
1969 17
1970 29
1971 30
1972 31
1973 37
1974 35
1975 26
1976 22
1977 37
1978 34
1979 39
1980 27
1981 46
1982 63
1983 48
1984 47
1985 48
1986 60
1987 80
1988 105
1989 127
1990 122
1991 142
1992 177
1993 231
1994 215
1995 248
1996 223
1997 235
1998 289
1999 288
2000 290
2001 335
2002 391
2003 413
2004 446
2005 475
2006 475
2007 481
2008 501
2009 503
2010 480
2011 533
2012 562
2013 570
2014 524
2015 554
2016 471
2017 444
2018 406
2019 293
2020 20
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11,445 results
Results by year
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Page 1
Maternal folic acid supplementation and dietary folate intake and congenital heart defects.
Mao B, Qiu J, Zhao N, Shao Y, Dai W, He X, Cui H, Lin X, Lv L, Tang Z, Xu S, Huang H, Zhou M, Xu X, Qiu W, Liu Q, Zhang Y. Mao B, et al. PLoS One. 2017 Nov 16;12(11):e0187996. doi: 10.1371/journal.pone.0187996. eCollection 2017. PLoS One. 2017. PMID: 29145433 Free PMC article.
Methyltetrahydrofolate vs Folic Acid Supplementation in Idiopathic Recurrent Miscarriage with Respect to Methylenetetrahydrofolate Reductase C677T and A1298C Polymorphisms: A Randomized Controlled Trial.
Hekmatdoost A, Vahid F, Yari Z, Sadeghi M, Eini-Zinab H, Lakpour N, Arefi S. Hekmatdoost A, et al. PLoS One. 2015 Dec 2;10(12):e0143569. doi: 10.1371/journal.pone.0143569. eCollection 2015. PLoS One. 2015. PMID: 26630680 Free PMC article. Clinical Trial.
Supplemental folic acid in pregnancy and childhood cancer risk.
Mortensen JH, Øyen N, Fomina T, Melbye M, Tretli S, Vollset SE, Bjørge T. Mortensen JH, et al. Br J Cancer. 2016 Jan 12;114(1):71-5. doi: 10.1038/bjc.2015.446. Br J Cancer. 2016. PMID: 26757423 Free PMC article.
Folic acid in pregnancy.
Paul C. Paul C. BJOG. 2016 Feb;123(3):392. doi: 10.1111/1471-0528.13602. BJOG. 2016. PMID: 26810675 Free article. No abstract available.
Prevalence and determinants of preconception folic acid use: an Italian multicenter survey.
Nilsen RM, Leoncini E, Gastaldi P, Allegri V, Agostino R, Faravelli F, Ferrazzoli F, Finale E, Ghirri P, Scarano G, Mastroiacovo P. Nilsen RM, et al. Ital J Pediatr. 2016 Jul 13;42(1):65. doi: 10.1186/s13052-016-0278-z. Ital J Pediatr. 2016. PMID: 27411491 Free PMC article. Clinical Trial.
11,445 results
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