Halder completed the acquisition of a majority stake in DermaZentrum, an operator of dermatology chains. Financial terms were not disclosed. “Prof. Dr. Meineke and his team of outstanding medical professionals have impressed us from the beginning. We see great potential to roll out their high level of expertise in conjunction with the proximity to the patient and are looking forward to shaping this expansion together," Mathias Fackelmeyer, Halder Managing Partner.