function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bartak, Miroslav & Kubik, Stepan', 6],
    ['Barták, Miroslav & Kubík, Stepán', 8],
    ['Barták, Miroslav & Kubík, Štěpán & Civelek, Hasan Sungur', 4],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 7],
    ['Daugeron, Christophe & Lefebvre, Vincent', 1],
    ['Kanavalova, Liliana & Kubik, Stepan & Bartak, Miroslav', 1],
    ['Kustov, Semen & Gladun, Vladimir', 1],
    ['Meigen, Johann Wilhelm', 15],
    ['Schlüsslmayr, Gerhard', 1],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 1],
    ['Shamshev, Igor V.', 2],
    ['Shamshev, Igor V. & Ivković, Marija', 6],
    ['Shamshev, Igor V. & Sinclair, Bradley J. & Khruleva, Olga A.', 30],
    ['Sinclair, Bradley J. & Vajda, Élodie A. & Saigusa, Toyohei', 25],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=109)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);