[Historical notes on the occasion of the 25th anniversary of the O.N.O. Romand].
D001530:Belgium; D005602:France; D007558:Italy; D009493:Neurosurgery; D009885:Ophthalmology; D012955:Societies, Medical / Q000266:history*; D013030:Spain; D013557:Switzerland
Notes historiques à l'occasion du 25e anniversaire de l'O.N.O. Romand.