Translation:
The Admor Rav Levi Yitzchak Horowitz zt"l put forth great effort to help childless couples with funding for various medical treatments.
One day he received a pamphlet that was dedicated to prohibiting a certain method of fertility treatment, and in the front was printed letters of approbation from many rabbis. the Admor opened the pamphlet, scanned through the various approbations and on each page said "he has children", "he has children", etc until he completed all the approbations and put the pamphlet down.
He then turned to his grandson and said, "I thought there might be one rav who signed no it that he himself does not have children. How can they prohibit this when they themselves do not know the pain of the childless parents?". (this story was heard from his grandson Rav Eliezer Geldzhaler shlit"a)