NethersoleO.The People's League of Health: The Inception of the League.London: Metchim & Son, 1922
2.
ChalmersI.Comparing like with like: some historical milestones in the evolution of methods to create unbiased comparison groups in therapeutic experiments.Int J Epidemiol2001; 30: 1170–8
3.
TheobaldG.W.The effect of calcium and vitamins A and D on incidence of pregnancy toxæmia.Lancet1937; 232: 1397–9
4.
OlsenS.F.Electronic responses. The first clinical trial with true randomisation of individuals?eBMJ1998; 317: 1220–3 [www.bmj.com/cgi/eletters/317/7167/1220]
5.
OlsenS.F.Use of randomisation in early clinical trials. Theobald's trial in 1936 incorporated some aspects of randomisation.BMJ1999; 318: 1352
6.
People's League of Health.Nutrition of expectant and nursing mothers.Lancet1942; 2: 10–12
7.
People's League of Health.The nutrition of expectant and nursing mothers in relation to maternal and infant mortality and morbidity.J Obstet Gynaecol Br Emp1946; 53: 498–509
8.
People's League of Health.Nutrition of expectant and nursing mothers.BMJ1942; 2: 77–8
9.
OlsenS.F., SecherN.J.A possible preventive effect of low-dose fish oil on early delivery and pre-eclampsia: indications from a 50-year-old controlled trial.Br J Nutr1990; 64: 599–609
