Oops looks like it is 4 months...thanks for the link.
Here it is
"Experiences in perioperative care must include rotations in critical care medicine, acute perioperative and chronic pain management, preoperative evaluation, and postanesthesia care. These experiences must consist of at least four months of distinct progressive rotations in critical care medicine; at least three months in pain medicine that may include one month in an acute perioperative pain management rotation, one month in a rotation for the assessment and treatment of inpatients and outpatients with chronic pain problems, and one month of regional analgesia experience in pain medicine; one month in a preoperative evaluation clinic; and 0.5 month in a postanesthesia care unit. The Review Committee will allow two months of critical care medicine and one month of pain medicine experiences to occur during the Clinical Base Year."