Sherwin, J. E., Lockitch, G., Rosenthal, P., Rhone, S., Magee, L. A., Ashwood, E. R., … Welch, S. (2007). Guidelines for clinical laboratory practice: Evaluation of maternal-fetal risk and reference values in pregnancy. Section V and VII. Acta Bioquimica Clinica Latinoamericana, 41(4), 563–586.

Sherwin, J. E., G. Lockitch, P. Rosenthal, S. Rhone, L. A. Magee, E. R. Ashwood, B. M. Goldsmith, et al. “Guidelines for clinical laboratory practice: Evaluation of maternal-fetal risk and reference values in pregnancy. Section V and VII.” Acta Bioquimica Clinica Latinoamericana 41, no. 4 (October 1, 2007): 563–86.

Sherwin JE, Lockitch G, Rosenthal P, Rhone S, Magee LA, Ashwood ER, et al. Guidelines for clinical laboratory practice: Evaluation of maternal-fetal risk and reference values in pregnancy. Section V and VII. Acta Bioquimica Clinica Latinoamericana. 2007 Oct 1;41(4):563–86.

Sherwin, J. E., et al. “Guidelines for clinical laboratory practice: Evaluation of maternal-fetal risk and reference values in pregnancy. Section V and VII.” Acta Bioquimica Clinica Latinoamericana, vol. 41, no. 4, Oct. 2007, pp. 563–86.

Sherwin JE, Lockitch G, Rosenthal P, Rhone S, Magee LA, Ashwood ER, Goldsmith BM, Lee CR, Geaghan S, Millington D, Bennett M, Von Dadelszen P, Currier B, Helmer G, Lorey F, Yeo KT, Hawker C, Lo S, Ritchie J, Sadrzadeh S, Hammett-Stabler C, Dufour DR, Welch S. Guidelines for clinical laboratory practice: Evaluation of maternal-fetal risk and reference values in pregnancy. Section V and VII. Acta Bioquimica Clinica Latinoamericana. 2007 Oct 1;41(4):563–586.