function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aliev, A. R.', 4],
    ['Carter, Howard P.', 4],
    ['Chatterjee, Tapas & Dovgal, Igor', 3],
    ['Chatterjee, Tapas & Dovgal, Igor & Fernandez-Leborans, Gregorio', 4],
    ['Dragesco, J.', 4],
    ['Durán-Ramírez, Carlos Alberto & Dias, Roberto Júnio Pedroso', 29],
    ['Jung, Jae Ho & Park, Kyung Min & Min, Gi Sik', 5],
    ['Kahl, Alfred', 3],
    ['Müller, Otto Friedrich', 36],
    ['Stein, Friedrich', 3],
    ['Stokes, Alfred Cheatham', 14],
    ['Tirjaková, Eva & Botlíková, Simona & Vďačný, Peter', 11],
    ['Vuxanovici, A.', 4],
    ['Wilbert, Norbert & Song, Weibo', 12],
    ['Yang, Caiting & Liu, An & Xu, Yusen & Xu, Yuan & Fan, Xinpeng', 4],
    ['Other (56)', 75]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=215)',
    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);