function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Christoffersen, Martin Lindsey', 2],
    ['Csuzdi, Csaba & Chang, Chih-Han & Pavlíček, Tomás', 1],
    ['De Santo, Fernanda B. & Niemeyer, Júlia C. & Bartz, Marie L. C.', 1],
    ['Hernández-García, Luis Manuel & Sousa, Sandriel Costa', 2],
    ['Kutuzović, Davorka Hackenberger', 1],
    ['Latif, Robabeh & Rejali, Farhad & Aminjan, Atabak Roohi', 2],
    ['Marchán, Daniel Fernández & Gérard, Sylvain & Hedde, Mickaël', 2],
    ['Mcgee, Joseph M. & Carrera-Martínez, Roberto', 3],
    ['Nguyen, Tung T. & Nguyen, Anh D. & Tran, Binh T. T.', 2],
    ['Sekulić, Jovana & Stojanović, Mirjana & Popović, Filip', 3],
    ['Shekhovtsov, Sergei V. & Derzhinsky, Yevgeniy A.', 1],
    ['Shen, Huei-Ping & Chang, Chih-Han & Chih, Wen-Jay', 1],
    ['Szederjesi, Tímea', 2],
    ['Tiwari, Nalini & Paliwal, R. & Rashid, Azhar & Yadav, Shweta', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);