Advocates believe that unassisted birth gives rise to a significant increase in maternal feelings and the mother's ability to bond with and take responsibility for the welfare of her child. Some followers are unable to find a birth practitioner willing to attend their desired home birth. In many areas of the United States, there are no midwives or physicians available to assist at home births. Likewise, the woman may find her specific case presents difficulty in finding a willing practitioner, as is usually the case with a vaginal birth after caesarean section (VBAC).