def age(x):
	"""
	Choose the younger patient. All equal, abstain.

	:param x: a DataFrame containing all the fields of the input DataFrame for two ethical alternatives
	:returns: which patient to choose - 0 or 1, -1 to abstain
	"""
	if x["Age_0"] == x["Age_1"]: return -1
	if x["Age_0"] < x["Age_1"]: return 0
	return 1