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=== References ===

=== References ===

1. Alan H. DeCherney, Lauren Nathan, T. Murphy Goodwin, Neri Laufer. Current Diagnosis & Treatment Obstetrics & Gynecology, Tenth Edition. McGraw Hill Professional, 2007. ISBN-13: 978-0-07-143900-8

#Alan H. DeCherney, Lauren Nathan, T. Murphy Goodwin, Neri Laufer. Current Diagnosis & Treatment Obstetrics & Gynecology, Tenth Edition. McGraw Hill Professional, 2007. ISBN-13: 978-0-07-143900-8

2. MRC Vitamin Study Research Group. Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. Lancet.1991;338 (8760):131– 137

#MRC Vitamin Study Research Group. Prevention of neural tube defects: results of the Medical Research Council Vitamin Study. Lancet.1991;338 (8760):131– 137

3. Molloy AM, Kirke PN, Troendle JF, Burke H, Sutton M, Brody LC, Scott JM, Mills JL. Maternal vitamin B12 status and risk of neural tube defects in a population with high neural tube defect prevalence and no folic acid fortification. Pediatrics 2009;123:917–23.

#Molloy AM, Kirke PN, Troendle JF, Burke H, Sutton M, Brody LC, Scott JM, Mills JL. Maternal vitamin B12 status and risk of neural tube defects in a population with high neural tube defect prevalence and no folic acid fortification. Pediatrics 2009;123:917–23.

4. Mitochondrial DNA and Heritable Traits and Diseases. Anthony S. Fauci, Dennis L. Kasper, Dan L. Longo et al. (Editors) in: Harrison’s Principles of Internal Medicine. Seventeenth Edition. 2008. The McGraw-Hill Companies, Inc. USA. ISBN 978-0-07-146633-2

#Mitochondrial DNA and Heritable Traits and Diseases. Anthony S. Fauci, Dennis L. Kasper, Dan L. Longo et al. (Editors) in: Harrison’s Principles of Internal Medicine. Seventeenth Edition. 2008. The McGraw-Hill Companies, Inc. USA. ISBN 978-0-07-146633-2

5. Patwardhan K. Human Physiology in Ayurveda. Varanasi, India: Chaukhambha Orientalia, 2008, Jiakrishnadas series no. 134.

#Patwardhan K. Human Physiology in Ayurveda. Varanasi, India: Chaukhambha Orientalia, 2008, Jiakrishnadas series no. 134.

6. Patwardhan K. The history of the discovery of blood circulation: unrecognized contributions of Ayurveda masters. Adv Physiol Educ. 2012;36:77–82.

#Patwardhan K. The history of the discovery of blood circulation: unrecognized contributions of Ayurveda masters. Adv Physiol Educ. 2012;36:77–82.

=== Further reading ===

=== Further reading ===