function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Geng, Ruozhen & Wen, Qianzhi & Wang, Yilang & Yang, Ping', 1],
    ['Gkelis, Spyros & Ourailidis, Iordanis & Panou, Manthos', 528],
    ['González-Resendiz, Laura & León-Tejera, Hilda P.', 1],
    ['Gupta, Pratibha', 11],
    ['Hauer, Tomáš & Bohunická, Markéta & Mühlsteinová, Radka', 2],
    ['Jarvis, Charlie', 5],
    ['Kaštovský, Jan & Gomez, Esther Berrendero & Hladil, Jindřich', 2],
    ['Kim, Do-Hyun & Lee, Nam-Ju & Yoon, Sung-Ro & Kim, Taehee', 1],
    ['Luz, Ruben & Cordeiro, Rita & Fonseca, Amelia', 93],
    ['Mcgregor, Glenn B. & Sendall, Barbara C.', 1],
    ['Novis, Phil M. & Visnovsky, Gabriel', 5],
    ['Tsuda, Roy T.', 1],
    ['Wilde, Susan B. & Johansen, Jeffrey R. & Wilde, H. Dayton', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=653)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);