function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Backlund, Douglas C. & Marrone, Gary M.', 1],
    ['Ghahari, Hassan & Háva, Jiří & R, Aclypea & M, Dendroxena', 11],
    ['Herman, Lee', 1],
    ['Mullins, Patricia L. & Riley, Edward G. & Oswald, John D.', 8],
    ['Márquez, Juan & Escoto-Rocha, Jaime & Goyenechea, Irene', 3],
    ['Ruchin, Alexaner B. & Egorov, Leonid V. & Alekseev, Sergei K.', 3],
    ['Sikes, Derek S. & Mousseau, Tonya', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Weber, Friedrich', 1],
    ['Çiftçi, Derya & Růžička, Jan & Hasbenli, Abdullah & Şahin, Ülfet', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);