RT Article T1 Psychedelics not linked to mental health problems or suicidal behavior: A population study JF Journal of psychopharmacology VO 29 IS 3 SP 270 OP 279 A1 Johansen, Paul 1901-1965 A1 Krebs, T.S. A2 Krebs, T.S. LA English YR 2015 UL https://krimdok.uni-tuebingen.de/Record/1912668920 DO 10.1177/0269881114568039