function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anatoly BOBROV & Anush KOSAKYAN', 2],
    ['Cepicka, Ivan & Hampl, Vladimír & Kulda, Jaroslav', 2],
    ['Ehrenberg, Christian Gottfried', 2],
    ['Haeckel, E. H. P. A.', 7],
    ['Hampl, Vladimír & Cepicka, Ivan & Flegr, Jaroslav & Tachezy, Jan', 1],
    ['Harper, James T. & Gile, Gillian H. & James, Erick R.', 4],
    ['Kudryavtsev, Alexander & Hausmann, Klaus', 2],
    ['Kudryavtsev, Alexander & Wylezich, Claudia & Pawlowski, Jan', 1],
    ['Kudryavtsev, Alexander & Wylezich, Claudia & Schlegel, Martin', 3],
    ['Lee, Won Je', 1],
    ['Trubovitz, Sarah & Renaudie, Johan & Lazarus, David', 31],
    ['Wylezich, Claudia & Karpov, Sergery A. & Mylnikov, Alexander P.', 2],
    ['Zadrobílková, Eliška & Walker, Giselle & Čepička, Ivan', 3],
    ['Zlatogursky, Vasily', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);