function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dubiel, Grzegorz & Bystrowski, Cezary', 3],
    ['Ebejer, Martin J. & Gatt, Paul', 1],
    ['Ebejer, Martin J. & Nicolosi, Giuseppe', 1],
    ['El-Hawagry, Magdi S. & Abdel-Dayem, Mahmoud S.', 1],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['Kazerani, Farzaneh & Mortelmans, Jonas', 1],
    ['Khaghaninia, S. & Kazerani, F. & Vala, Jean-Claude', 1],
    ['Knutson, Lloyd V. & Deeming, John C. & Ebejer, Martin J.', 3],
    ['Kurina, Olavi & Knutson, Lloyd', 1],
    ['Li, Zhu & Yang, Ding & Murphy, William L.', 1],
    ['Marinoni, Luciane & Murphy, William L.', 2],
    ['Murphy, William L. & González, Christian R. & Elgueta, Mario', 3],
    ['Nerudová-Horsáková, Jana & Murphy, William L.', 1],
    ['Schlüsslmayr, Gerhard', 1],
    ['Vala, Jean-Claude & Williams, Christopher D.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    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);