By Aluoja Anu   Voogne Helina   Maron Eduard   Gustavsson J. Petter   Vohma Ulle   Shlik Jakov   in Nordic Journal of Psychiatry

ISSN:0803-9488|63|3|231-236

Informa Healthcare‎(2009)‎

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By Loehlin John C.   Jönsson Erik G.   Gustavsson J. Petter   Schalling Martin   Stallings Michael C.   in Twin Research

ISSN:1369-0523|6|3|201-208

Australian Academic Press‎(2003)‎

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By Wilczek A.   Weinryb R.   Barber J.   Gustavsson J. Petter   Åsberg M.   in Psychotherapy Research

ISSN:1050-3307|10|1|100-113

Routledge Ltd‎(2000)‎

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By Loehlin John C.   Jönsson Erik G.   Gustavsson J. Petter   Schalling Martin   Medland Sarah E.   Montgomery Grant W.   Martin Nicholas G.   in Twin Research

ISSN:1369-0523|7|5|456-461

Australian Academic Press‎(2004)‎

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