function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akyazi, Rana & Soysal, Mete & Altunç, Yunus Emre', 1],
    ['Akyazı, Rana & Welbourn, Cal & Liburd, Oscar E.', 1],
    ['Barbar, Ziad', 1],
    ['Doġan, Salih', 2],
    ['Escobar-GarciaK, Hector Alonso & AndradeK, Daniel Júnior De', 3],
    ['Fan, Qing-Hai & Zhang, Zhi-Qiang', 1],
    ['Gonzalez-Rodriguez, Roberto H.', 1],
    ['Johann, Liana & Carvalho, Gervásio Silva & Majolo, Fernanda', 5],
    ['KamranK, Muhammad & MirzaK, Jawwad Hassan', 6],
    ['Leiva, Sergio & Fernandez, Nestor & Theron, Pieter', 1],
    ['Monjarás-Barrera, José Irving & Silva, Guilherme Liberato Da', 3],
    ['Paktinat-Saeij, Saeid & Barroso, Geovanny', 2],
    ['Saccaggi, Davina L. & Ueckermann, Edward A.', 1],
    ['Sousa, J. M. de & Gondim Jr., M. G. C. & Lofego, A. C.', 1],
    ['Stathakis, Theodoros I. & Kapaxidi, Eleftheria V.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=31)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);