Kolatat, TBerjrablaya, DChearskul, S2009-05-272009-05-271975-03-01Kolatat T, Berjrablaya D, Chearskul S. Effect of position on the duration of cardiac cycle phases in normal Thai subjects. Journal of the Medical Association of Thailand. 1975 Mar; 58(3): 143-7http://imsear.searo.who.int/handle/123456789/43624Chotmaihet Thangphaet.engAdultHeart --physiologyHeart Function TestsHumansMalePostureEffect of position on the duration of cardiac cycle phases in normal Thai subjects.Journal Article