Rogers PG.
J Med Educ. 1976 Jan;51(1):3-6. doi: 10.1097/00001888-197601000-00001.
PMID: 1246060

Shchulipenko IM.
Klin Med (Mosk). 1989 Nov;67(11):137-40.
PMID: 2625953

Le Bourgeois JP.
Presse Med. 2006 Mar;35(3):379-81. doi: 10.1016/s0755-4982(06)74599-7.
PMID: 16550125

Rosenbaum ME, Lenoch S, Ferguson KJ.
Teach Learn Med. 2005;17(3):247-52. doi: 10.1207/s15328015tlm1703_8.
PMID: 16042520

Alpert JS, Mandell BF.
Am J Med. 2009 Nov;122(11):971-2. doi: 10.1016/j.amjmed.2009.06.019.
PMID: 19854318

Launer J.
Postgrad Med J. 2013 Jul;89(1053):430. doi: 10.1136/postgradmedj-2013-132145.
PMID: 23781116

Rubeck RF, Witzke DB.
Acad Med. 1998 Sep;73(9):S32-7. doi: 10.1097/00001888-199809001-00007.
PMID: 9759116