D. D. V. Thakker and D. V. B. Kariya, “Assessment Of Left Ventricular Structural And Functional Indices By Echocardiography In Relation To The Haemoglobin Levels In Second Trimester Of Pregnancy: Assessment Of Left Ventricular Structural And Functional Indices”, Natl J Integr Res Med, vol. 3, no. 3, pp. 7–10, Aug. 2012.