A. E. Peterson

Multicenter study of the Lactational Amenorrhea Method (LAM): I. Efficacy, duration, and implications for clinical application.

H. von Hertzen, M. Labbok, P. V. Van Look, 1997, Contraception.

Multicenter study of the lactational amenorrhea method (LAM) III: effectiveness, duration, and satisfaction with reduced client-provider contact.

R. Pérez‐Escamilla, H. von Hertzen, M. Labbok, 2000, Contraception.

Maternal nutritional status is inversely associated with lactational amenorrhea in Sub-Saharan Africa: results from demographic and health surveys II and III.

R. Pérez‐Escamilla, V. Hight-Laukaran, A. E. Peterson, 1998, The Journal of nutrition.

Multicenter study of the Lactational Amenorrhea Method (LAM): II. Acceptability, utility, and policy implications.

H. von Hertzen, P. Look, M. Labbok, 1997, Contraception.