input question: Fix spacing: Inclinicalstudies,significantconcomitantpositivepatchtestreactionshavebeenobservedinvolvingcolophoniumandreactionstofragrancemarkers(fragrancemixandbalsamofPeru)amongconsecutivepatients(2-4).

output answer: In clinical studies, significant concomitant positive patch test reactions have been observed involving colophonium and reactions to fragrance markers (fragrance mix and balsam of Peru) among consecutive patients (2-4).

input question: Fix spacing: Evenwhenthewirelesssignalisabletopassthroughanobject,itisslightlyweakened.

output answer: Even when the wireless signal is able to pass through an object, it is slightly weakened.

input question: Fix spacing: Theinvestigationshowedthatthemetalreleasefromcommonusedmaterialsdidexceedthedrinkingwaterqualitydemandsforthemetalszinc,copper,nickelandlead,butnotforothermetals.

output answer: The investigation showed that the metal release from common used materials did exceed the drinking water quality demands for the metals zinc, copper, nickel and lead, but not for other metals.

input question: Fix spacing: Calldifferentiationbetweendoorcalls,storeycalls,andinternalcalls

output answer:
Call differentiation between door calls, storey calls, and internal calls