function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Bleeker, Pieter', 1],
    ['Bogorodsky, Sergey V. & Alpermann, Tilman J. & Mal, Ahmad O.', 1],
    ['Esmaeili, Hamid Reza & Hamidan, Neshat', 1],
    ['Herre, Albert W. C. T.', 1],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 1],
    ['Kovačić, Marcelo & Renoult, Julien P. & Pillon, Roberto', 1],
    ['Larson, Helen K. & Pezold, Frank L.', 1],
    ['Mehta, R. & Kamala Devi,?. & Mehta, H. S.', 1],
    ['Nurettin Meriç & Lütfiye Eryilmaz & Müfit Özulug', 1],
    ['Pezold, Frank L.', 3],
    ['Popta, C. M. L.', 1],
    ['Sauvage, H. E.', 1],
    ['Talwar, P. K. & Chatterjee, T. K. & Dev Roy, M. K.', 1],
    ['Tomiyama, I.', 1],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    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);