Does a difference in opinion between a physician and the prisoner concerning what medical care is appropriate amount to deliberate indifference?

"A difference of opinion between a physician and the prisoner - or between medical professionals - concerning what medical care is appropriate does not amount to deliberate indifference." Snow v. McDaniel, 681 F.3d 978, 987 (9th Cir. 2012). "To show deliberate indifference, the plaintiff must show that the course of treatment the doctors chose was medically unacceptable under the circumstances and that the defendants chose this course in conscious disregard of an excessive risk to plaintiff's health." Id.