foreign_keys:
  staff_exp_mngmnt_tasks:
    staff_weekly_expense_id: staff_weekly_expense
  staff_exp_data_cllctn_tasks:
    staff_weekly_expense_id: staff_weekly_expense
  participant_consent:
    person_who_consented_id: person
    person_wthdrw_consent_id: person
  event:
    participant_id: participant
  participant_vis_consent:
    vis_person_who_consented_id: person
  link_contact:
    specimen_id: false
  birth_visit:
    new_address_id: address
    mail_address_id: address
    new_address_b_id: address
  household_enumeration_hidden_du:
    hdu_address_id: address
  pb_recruitment:
    address_pb_id: address
  pre_preg:
    c_addr1_id: address
    c_addr2_id: address
  preg_screen_eh:
    mail_address_id: address
    new_address_id: address
  preg_screen_hi:
    mail_address_id: address
    new_address_id: address
  preg_screen_pb:
    mail_address_id: address
    new_address_id: address
  preg_visit_1:
    b_address_id: address
    c_addr1_id: address
    c_addr2_id: address
  preg_visit_2:
    b_address_id: address
    c_addr1_id: address
    c_addr2_id: address
  preg_visit_li:
    b_address_id: address
  six_mth_mother:
    c_addr1_id: address
    c_addr2_id: address
  twelve_mth_mother:
    c_addr1_id: address
    c_addr2_id: address