function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aguado, M. Teresa & Murray, Anna & Hutchings, Pat', 2],
    ['Barroso, Rômulo & Paiva, Paulo Cesar De', 2],
    ['Faulwetter, Sarah & Chatzigeorgiou, Georgios & Galil, Bella S.', 7],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 8],
    ['Langeneck, Joachim & Musco, Luigi & Busoni, Giulio', 1],
    ['Mikac, Barbara', 1],
    ['Neal, Lenka & Paterson, Gordon L. J. & Blockley, David', 1],
    ['Salazar-Vallejo, Sergio I. & Carrera-Parra, Luis F.', 1],
    ['Salcedo, Diana L. & Martín, Guillermo San', 1],
    ['Çinar, Melih Ertan & Dagli, Ertan & Açik, Sermin', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    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);