function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 2],
    ['Ivkovic, Marija & Doric, Valentina & Baranov, Viktor', 1],
    ['Kato, Daichi & Watanabe, Kozo & Kolcsar, Levente-Peter', 8],
    ['Kolcsar, Levente-Peter & Oosterbroek, Pjotr', 11],
    ['Kolcsar, Levente-Peter & d\'Oliveira, Micha Camiel', 2],
    ['Meireles, Jose Eduardo & Lima, Haroldo Cavalcante De', 1],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 15],
    ['Niu, Miao & Jiang, Kai-Wen & Song, Zhu-Qiu & Duan, Lei', 1],
    ['Obona, Jozef & Stary, Jaroslav & Manko, Peter & Hrivniak, Ľubos', 2],
    ['O’Hara, James E. & Cerretti, Pierfilippo & Pape, Thomas', 1],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 2],
    ['Wiedeńska, Jolanta & Syratt, Maksymilian', 1],
    ['Ÿ, Jaroslav Star & Oosterbroek, Pjotr', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    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);