title: Evaluation of helminthological and protozoological examinations of seamen of the GDR merchant fleet sailing to tropical regions.
mesh_terms: D056890:Eukaryota / Q000302:isolation & purification*; D005243:Feces; D005859:Germany, East; D006376:Helminths; D006801:Humans; D009326:Naval Medicine; D010272:Parasitic Diseases / Q000517:prevention & control*; D012767:Ships; D014330:Tropical Medicine