Fig. 2
From: A systematic review of methods to measure menstrual blood loss
a Representation of the original menstrual pictogram. Reprinted from Fertility and Sterility, 76, Wyatt KM et al., Determination of total menstrual blood loss, pp125–31, Copyright 2001, with permission from Elsevier [32]. b A modified version of the menstrual pictogram. Larsen L et al., Reproductive Sciences, 20 (6), pp680–7, Copyright © 2013, Reprinted by permission of SAGE publications [26]. c The menstrual pictogram validated for use with towels containing superabsorbent polymers. Reprinted from Fertility and Sterility, 101, Magnay, JL et al., Validation of a new menstrual pictogram (superabsorbent polymer-c version) for use with ultraslim towels that contain superabsorbent polymers, pp515–21, Copyright 2014, with permission from Elsevier [27]