Response options: Once a week or more often, Several times a month, but not weekly, Monthly, Several times a year, but not monthly, Once a year or less, Never, Not Asked, Refused (vol.), Don't Know (vol.)
Response options: DE: Inapplicable;RU: Inappropiate response{Inappropriate}, Not asked, Not applicable, No answer, Don´t know, Mentioned, Not mentioned
Response options: DE: Inapplicable;RU: Inappropiate response{Inappropriate}, Not asked, Not applicable, No answer, Don´t know, Mentioned, Not mentioned
