Solution : https://service.sap.com/sap/support/notes/943130 (SAP Service marketplace login required)
Key words : 
terms ehs2005sp00ohoccupational healthbasic datamedical servicehealth surveillance protocolrehsh_x_prot_completerehsh_x_prot_agent_completerehsh_x_prot_freq_completerehsh_x_srv_prot_date_complete reason, trigger levels    affected table, medical services    affected table, customer-specific examination types, basic data             medical serviceif, t7ehs00_protfreq table    affected table, health surveillance protocol, health surveillance protocols, t7ehs00_protagnt    affected fields, t7ehs00_srv_prot    affected fields
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