function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anatoly BOBROV & Anush KOSAKYAN', 2],
    ['Ansari, Kapuli Gani Mohamed Thameemul & Guidi, Loretta', 2],
    ['As, Johann Van & Davies, Angela J. & Smit, Nico J.', 1],
    ['Caus, Esmeralda & Parente, Mariano & Vicedo, Vicent', 1],
    ['Clopton, Richard E.', 1],
    ['Davydov, V. I. & Arefifard, Sakineh', 7],
    ['Dovgal, Igor & Chatterjee, Tapas & Ingole, Baban', 3],
    ['Ehrenberg, Christian Gottfried', 4],
    ['Haeckel, E. H. P. A.', 9],
    ['Kudryavtsev, Alexander & Hausmann, Klaus', 2],
    ['Kudryavtsev, Alexander & Wylezich, Claudia & Schlegel, Martin', 3],
    ['Leven, E. J. & Davydov, V. I. & Gorgij, M. N.', 3],
    ['Wylezich, Claudia & Karpov, Sergery A. & Mylnikov, Alexander P.', 2],
    ['Zadrobílková, Eliška & Walker, Giselle & Čepička, Ivan', 3],
    ['Zlatogursky, Vasily', 2],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=59)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);