function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asanuma, Kiyoshi & Uchikawa, Kimito', 1],
    ['Kolenati, Friedrich August Rudolf', 1],
    ['Ma, Min & Li, Sheng-Cai & Fan, Qing-Hai', 2],
    ['Nemati, Alireza & Riahi, Elham & Khalili-Moghadam, Arsalan', 1],
    ['Orlova, M. V. & Klimov, P. B. & Orlov, O. L. & Smirnov, D. G.', 7],
    ['Orlova, M. V. & Orlov, O. L.', 3],
    ['Orlova, Maria V. & Anisimov, Nikolay V.', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);