function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Afrand, Mahboobeh & Sourinejad, Iman', 1],
    ['Ascher, John S. & Soh, Zestin W. W. & Chui, Shao Xiong', 1],
    ['Chevrette, Marc G. & Carlson, Caitlin M. & Ortega, Humberto E.', 1],
    ['Furtado, Raíssa & Márquez, Rafael & Hartz, Sandra Maria', 2],
    ['Gonçalves, Ana Carla & Ouhammoud, Ahmed & Amirouche, Rachid', 1],
    ['Legalov, Andrei A. & Nazarenko, Vitaliy Y.', 1],
    ['Qi, Xiaoxiao & Li, Huan & Liu, Xin & Wang, Bohan & Meng, Jiali', 2],
    ['Ramos, Yan Gabriel Celli & Aximoff, Izar Araujo', 2],
    ['Rotter, Michael C.', 1],
    ['Tedesco, Erik Costa & Calderon, Emiliano Nicolas', 1],
    ['Wichard, Wilfried & Neumann, Christian', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);