function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Baki, Abdel-Azeem S. & Al-Quraishy, Saleh & Rocha, Sónia', 1],
    ['Freeman, Mark Andrew & Kasper, Jacob & Kristmundsson, Árni', 1],
    ['Freeman, Mark Andrew & Sommerville, Christina', 1],
    ['Lee, Won Je', 1],
    ['Naranjo-Diaz, Nelson & Suaza-Vasco, Juan & Pineda-Angel, Jacobo', 6],
    ['Omrani, Seyed-Mohammad & Moosavi, Seyedeh-Fatemeh', 1],
    ['Pathania, Prakash C. & Das, Apurva & Chandra, Kailash', 2],
    ['Toguebaye, Bhen Sikina & Quilichini, Yann', 1],
    ['Winters, Andrew David & Faisal, Mohamed', 1],
    ['Yaman, Mustafa & Bekircan, Çaǧri & Radek, Renate', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);