Yeah, but that opens many more questions than it answers: this $620 000 figure cannot come out of labor intensity alone, as it represents the cost of thousands

Yeah, but that opens many more questions than it answers: this $620 000 figure cannot come out of labor intensity alone, as it represents the cost of thousands of work hours (literally a dozen of doctor full time for a month, or at least 50 well paid specialized technicians working for an entire month on each patient treatment) yet the process described in the text doesn't seem to match this level of labor.