Sawyer MG, Reece CE, Bowering K, Jeffs D, Sawyer AC, Peters JD, Mpundu-Kaambwa C, Clark JJ, McDonald D, Mittinty MN, Lynch JW. Usage, adherence and attrition: how new mothers engage with a nurse-moderated web-based intervention to support maternal and infant health. A 9-month observational study. BMJ Open. 2016 08 05; 6(8):e009967.