Spontaneous respiratory rate in first stage labour--comparison with the breathing exercises of natural-childbirth methods.
D001945:Breathing Exercises; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D008722:Methods; D009119:Muscle Contraction; D009321:Natural Childbirth; D011247:Pregnancy; D012119:Respiration; D014599:Uterus / Q000502:physiology