- doi:10.1002/14651858.CD011230.pub2. PMC 4262120. PMID 25220133. ****er C,
Ehlken C,
Agostini HT,
Antes G,
Ruecker G,
Lelgemann M, et al. (2012). "A safety...
- on
January 29, 2015.
Retrieved 29
January 2015. Grünig E,
Weissmann S,
Ehlken N,
Fijalkowska A,
Fischer C,
Fourme T, Galié N,
Ghofrani A,
Harrison RE...
- 331–332. doi:10.1016/S1098-3015(10)62870-7.
Retrieved 28
October 2013.
Ehlken, B.; Kugland, B; Schramm, B; Quednau, K; Berger, K. (November 2003). "Psn12...
- Speich, Rudolf; McKenna,
Stephen P.; Grunig, Ekkehard; Kahler,
Christian M.;
Ehlken, Nicola; Treder, Ursula; Crawford,
Sigrid R.; Huber, Lars C.; Ulrich, Silvia...
- (Qoliad)".
Value in Health. 8 (3): 331–332. doi:10.1016/S1098-3015(10)62870-7.
Ehlken B,
Kugland B,
Schramm B,
Quednau K,
Berger K (2003). "Psn12 Quality-Of-Life...