Acupuncture was administered in outpatient clinics by @ ( mean age @years ; @ female / @ male ) conventionally-trained medical doctors ( @ % with postgraduate specialization such as internal or family medicine ) with additional extensive acupuncture training ( median @hours ( @st quartile @ , @rd quartile @hours with @ % presenting a B-diploma in acupuncture training ( @hours ) ) and experience ( mean @years in practice ) .