Which preposition to use with sanitarians

in Occurrences 1%

"The Far Eastern Association of Tropical Medicine," the biennial meetings of which bring together the most experienced, skilful and widely known physicians and sanitarians in the East for an interchange of views and experiences which is invaluable, and greatly facilitates concerted action between the various governments concerned in dealing with what may be termed "international health problems.

of Occurrences 1%

They sent a commission, consisting of Dr. John Sutherland, one of the ablest sanitarians of the kingdom, Dr. Hector Gavin, and Robert Rawlinson, civil engineer, to the Black Sea, to inquire into the state of things there, to search out the causes of the sufferings of the army, and see if there might not be a remedy found and applied.

Which preposition to use with  sanitarians