(Q48834764)
Statements
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Sleep onset insomnia, sleep maintaining insomnia and insomnia with early morning awakening--temporal stability of subtypes in a longitudinal study on general practice attenders. (English)
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Hohagen F
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Käppler C
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Schramm E
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Riemann D
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Weyerer S
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Berger M
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1 September 1994
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17
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6
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551-554
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