Problems of cooperative studies. Landbeck G. J Cancer Res Clin Oncol. 1983;106:19-20. doi: 10.1007/BF00625046. PMID: 6885901
Methodological problems of clinical trials in multi-infarct dementia. Loeb C, Gandolfo C. Neuroepidemiology. 1990;9(4):223-7. doi: 10.1159/000110776. PMID: 2215847
[Research on usual care: Methodological issues]. Lemaire F. Presse Med. 2016 Jul-Aug;45(7):667-9. doi: 10.1016/j.lpm.2016.07.004. Epub 2016 Aug 04. PMID: 27499225
Beware of multiplicity problems in clinical trials. Touma-Fernández Á. Rev Esp Anestesiol Reanim. 2015 Oct;62(8):477-8. doi: 10.1016/j.redar.2015.02.006. Epub 2015 Mar 26. PMID: 25819305
